EP2605887B1 - Device and method for dispensing dry ice snow - Google Patents
Device and method for dispensing dry ice snow Download PDFInfo
- Publication number
- EP2605887B1 EP2605887B1 EP11745962.8A EP11745962A EP2605887B1 EP 2605887 B1 EP2605887 B1 EP 2605887B1 EP 11745962 A EP11745962 A EP 11745962A EP 2605887 B1 EP2605887 B1 EP 2605887B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dry ice
- plate
- snow
- insert plate
- storage container
- 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
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims description 159
- 235000011089 carbon dioxide Nutrition 0.000 title claims description 151
- 238000000034 method Methods 0.000 title claims description 23
- 239000008188 pellet Substances 0.000 claims description 67
- 238000005422 blasting Methods 0.000 claims description 25
- 238000003860 storage Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims 2
- 238000004140 cleaning Methods 0.000 description 34
- 238000003780 insertion Methods 0.000 description 22
- 230000037431 insertion Effects 0.000 description 22
- 239000003795 chemical substances by application Substances 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- 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
- B24C7/0069—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 with means for preventing clogging of the equipment or for preventing abrasive entering the airway
Definitions
- the invention relates to a device and a method for dispensing either dry ice snow or dry ice pellets with the features of the preamble of the independent claims.
- pellets dry ice granules
- the compressed air can be used simultaneously to move the intake by means of a pneumatic arrangement back and forth.
- a pneumatic arrangement back and forth.
- Such a method and a corresponding device are, for example, in EP 1 769 886 shown.
- Dry ice snow in the present application is understood to mean an accumulation of loosely connected CO2 crystals.
- the density ratio of pellets and snow is approximately 1: 2/3.
- CO2 snow blasting Due to the lower kinetic energy of the carbon dioxide particles, CO2 snow blasting is a significantly less abrasive process as the pellet blasting and therefore suitable for cleaning sensitive surfaces. On the other hand, pellet blasting is better for heavy soiling and for coarser cleaning. Consequently, the two methods complement each other.
- the snow can also be thrown against a surface to be cleaned by a hose with a blasting gun provided at the free end of the hose ("blasting").
- CO2 snow especially after prolonged storage, due to gravity, heating and / or accumulation of condensation tends to clump and is therefore less or no longer eligible.
- the clumping can also be prevented by the dry ice is swirled in a nozzle and the snow is generated only when it exits the nozzle, such as in EP 1 843 874 is shown.
- the dry ice snow container can be vibrated, such as in US 3670516 or in the WO 2006/083890 which discloses an apparatus and a method according to the preambles of claims 1 and 11, or which is conveyed dry ice, such as in US 3786644 exposed to an electric field, so that discharge of electrostatically charged dry ice particles.
- devices for dispensing dry ice pellets and dry ice snow are fundamentally different, so that if both processes are desired for surface cleaning, two different systems must be procured.
- the device according to the invention and the method according to the invention should also make it possible to create a device which is space-saving and cost-effective in the simplest possible way.
- a possibility is sought to convert an existing device for dispensing dry ice pellets simply and cost-effectively to a device for dispensing dry ice snow and / or for dispensing dry ice snow or dry ice pellets. According to the invention, this object is achieved with devices and methods having the features of the independent patent claims.
- the plate is there-provided with passage openings.
- the plate which can be used in a storage container for holding dry ice snow, serves mainly for loosening and dosing of the dry ice snow.
- the dry ice snow lies on the plate and can fall in portions through the openings. The clumping of dry ice snow is thereby prevented.
- the insert plate may have a flat, self-supporting structure and be formed brett- or sheet-like.
- the plate may also have a frame structure in which a sieve or a perforated plate is accommodated.
- the plate may be provided with a support element, in particular a support ring.
- the support element is preferably not firmly connected to the plate.
- a support element placed on the plate ensures that the plate moved upwards, for example with compressed air, is pushed down again by the gravitational effect of the support element. Since the support element is not, or at least not rigidly, connected to the plate, it is catapulted vertically upward during the upward movement of the plate. The falling back of the support element on the plate ensures that this resumes its initial position. The support element strikes when falling back onto the insert plate and the resulting jolt causes dry ice lying on the plate to fall through the passage openings. At the same time, dry ice snow between the support element and the insert plate is pressed through the passage openings.
- the insert plate may also be fixedly mounted in an inner container which is movable relative to the reservoir.
- the plate is preferably provided with a stop element on which acts in the promotion of dry ice snow a vibrating element.
- the stop element advantageously has a stop surface for this purpose.
- the insert plate may also be connected to an air intake tube.
- the air intake tube may be an elongate shaped solid member having openings at both ends which is hollow internally.
- the tube may be cylindrically shaped and / or have at least one constant cross-sectional area along the longitudinal axis.
- the aspiration tube provides a preferred path for air drawn in with dry ice.
- the insertion plate is connected to a stop body, which has a stop surface.
- the plate can be shaken in this case by direct abutment of the stop surface.
- the plate may also have a spike which projects into the air intake tube and / or into the outlet opening.
- the mandrel ensures axial guidance.
- the insertion of the plate ensures that a device for cleaning with dry ice pellets, such as in EP 1 769 886 described converted to a device for cleaning with dry ice snow.
- a plate inserted in such a device prevents, due to the sieving effect of the plate, that dry ice snow filled in instead of dry ice pellets clumps together during the conveying process.
- the loosened snow is conveyed through the passage openings due to the shaking movement.
- the combination of dry ice pellet cleaner and insert plate thus represents a device for cleaning with both dry ice pellets and dry ice snow.
- the plate comprises a sieve or grid, which is for example covered by a frame.
- the size and arrangement of the passage openings influence the passage rate and the spatial distribution of the dry ice snow.
- the size and arrangement of the passage openings and the plate are preferably adapted to the geometry of the reservoir and / or the outlet opening.
- the device is designed such that an insertion plate with passage openings, in particular as described above, is provided.
- the plate is located inside the storage container and divides the storage container into two areas, wherein in the first region is the, in particular unsliced and more compact, dry ice snow and in the second region of the conveyed through the plate, in particular loosened, snow.
- the storage container is suitable for receiving, for example, previously produced dry ice cream or previously produced dry ice pellets.
- the insert plate is an insertable and removable plate.
- the vibrating means may be a vibrating means driven mechanically, hydraulically, pneumatically, electromagnetically or piezoelectrically.
- the insert plate can be shaken for example by mechanical shocks or by means of ultrasound.
- the stripping means may be, for example, a scraping tool, a squeegee or a brush, by means of which the snow, similar to a Passevite, is pressed through the passage openings.
- the reservoir is made of thermally insulating material, whereby the melting or Sublimiervorgang of the snow is significantly slowed down. The dry ice snow must therefore be refilled less frequently.
- the setting of the shaker frequency and / or the stripping frequency allows the dosage of the amount of snow conveyed through the plate per time.
- the device also has an apparatus for producing dry ice.
- the device is preferably so small and lightly dimensioned that it can be transported by hand.
- the device has for example roles or is transportable on a cart.
- Device with insertion plate is the Rüttelstoff a direct or indirect acting on the plate shock device.
- the insert plate may be spring-mounted or overlying.
- the impact device may comprise a hammer, for example, periodically acting on the plate, which vibrates the, for example, spring-mounted, plate vibrated. As a result, continuous trickling of dry ice snow can be achieved.
- the reservoir itself by means of the Rüttelstoffs be vibrated.
- An outside of the reservoir attached shaking means can shake the reservoir.
- a preferably spring-mounted plate can be shaken.
- An externally mounted vibration means could be a shock device, which in particular acts with periodic poking on the reservoir.
- the vibration frequency is preferably between 1 and 10 Hz.
- the vibration amplitude of the plate is preferably between 1 and 20 mm.
- the reservoir is connected to a compressed air device, by means of which the conveyed material can be discharged.
- the container may be provided with a delivery line, in particular a flexible tube, which at one end with the Container and connected at the other end with a compressed air gun.
- a negative pressure in the tube can be generated by means of the compressed air device, whereby, for example, sucked through the insert plate snow or dry ice pellets can be sucked and discharged through the compressed air gun.
- the delivery line can be designed as a freely movable intake manifold and be controlled with an oscillation valve.
- the intake manifold can then act as a jar against a stop surface on the insert plate or the reservoir.
- the at least one selection element for fixing pellets as material to be conveyed may be an admixing element, in particular located completely inside the reservoir, which is preferably movable back and forth parallel to an axis.
- the mixing element is, for example, a rod or a tube on which radial star-shaped transverse elements are mounted perpendicular to the axis and serve for centering. By means of the mixing element can be prevented that dry ice pellets stick together and block the device.
- the blending element may also have an abutment surface against which a movable intake manifold strikes during operation, thereby smashing dry ice pellets or lumps of dry ice pellets.
- the admixing element further comprises a spigot extending into the intake manifold, which prevents wedging of the pellets in the intake manifold and keeps the intake opening of the intake manifold free.
- the mixing element is connected to an inner container.
- a user opts for another selection element and, for example, removes the blending element to insert an insert plate into the container, he can use the blending element and the inner container to remove the remaining pellets remaining in the container. Conversely, he can fill with the mixing element equal pellets in the container, if he has already given this in the inner container.
- a switch attached to the device is provided as the selection element, which adjusts the vibrating and / or brushing means according to the desired conveying mode. For example, a certain shaking frequency and / or vibration amplitude can be set for the promotion of dry ice snow and another for the promotion of dry ice pellets.
- the device serves to convey pellets or dry ice snow.
- the device is provided with a suction device.
- a suction device For example, dry ice snow may be blasted onto a surface, such as the interior of a vehicle, while simultaneously aspirating the sublimated CO2 gas and the debris released by blasting.
- the suction is arranged so that it can be blasted with the dry ice jet as far as possible in a region which is covered by the suction.
- the arrangement of dry ice blasting device and suction or blower is preferably chosen so that the detached pollution can get as directly as possible from the interior, for example the vehicle interior or engine compartment.
- either dry ice snow or dry ice pellets are selected as conveyed material in a first step and are deposited in particular in the storage container.
- the type of funding is determined according to the selection of the conveyed goods.
- the conveyed material located in the storage container can be conveyed and discharged according to the selected type of delivery.
- the choice of the type of delivery is to use a mixing element in the choice of dry ice pellets as conveyed or to use in the choice of dry ice snow as described above plate with passage openings.
- the conveying mode is correspondingly the shaking of a mixing element or the shaking of an insert plate with passage openings with a shaking means such as described above.
- a compressed air arrangement is preferably used, for which purpose in particular a negative pressure in the storage container is generated.
- an insert plate with passage openings is used for conveying dry ice snow in a device for cleaning with dry ice.
- this device can be easily converted for an alternative application, namely the cleaning of sensitive surfaces, or a cleaning device with dry ice pellets becomes a cleaning device with both dry ice pellets and dry ice snow upgraded.
- the method is particularly suitable for cleaning of limited indoor spaces, such as the engine compartment of a vehicle or aircraft or the interior or the cabin of a vehicle or aircraft.
- the dry ice can be added for this purpose, a fragrance and / or care agent.
- FIG. 1 schematically shows the structure of an inventive device 1 for cleaning with dry ice, which also from the prior art, for example EP 1 769 88 is known.
- the device 1 comprises a compressed air device 101, a reservoir 10 for receiving dry ice T and a compressed air device 101 driven by the pneumatic cylinder 14.
- the dry ice T is located in the reservoir 10 and is guided by the compressed air device 101 in a compressed air gun 31, which is connected to an intake 11 generates a negative pressure.
- the dry ice T reaches a surface to be cleaned at high speed ("blasting").
- FIGS. 2 to 10 each show a section of a like in FIG. 1 shown, but modified according to the invention, each of which a reservoir 10 provided with a Rüttelstoff 102, coating compositions 103 or a selection element in each case shows a variant for the promotion of dry ice.
- FIG. 2 shows the reservoir 10 and as a selection element 104 for the promotion of pellets a mixing element 15 with an air supply pipe 16 through which air is sucked and in which humidity can condense.
- the vibrating means 102 comprises in this case the pneumatic cylinder 14 connected to a along the longitudinal direction L up and down moving intake 11. At the end of the upward movement of the intake manifold 11 strikes a stop surface 13. Dry ice pellets, which between the intake manifold 11 and the stop surface 13th are crushed due to the reciprocating motion of the intake manifold 11 and sucked through the intake manifold 11.
- a mandrel 118 ensures that no pellets wedge in the Ansaustutzen 11 and the outlet opening remains free.
- the vibrating means 102 comprises the pneumatic cylinder 14 connected to the intake manifold 11 moving up and down along the longitudinal direction L.
- the impingement of the intake manifold 11 on the impact body 107 causes the insertion plate 105a to vibrate. Dry ice snow on the plate 105a is thereby screened through the passage openings 106 not explicitly shown in the figure and sucked off through the intake pipe 11.
- the impactor body 107 may have an obtuse mandrel not shown in the figure.
- an insertion plate 105b with impact body 107b which additionally has a mandrel 118 extending into the intake manifold 11.
- the mandrel 118 serves to guide the reciprocating motion since the insertion plate 105b has a smaller diameter than the inner opening of the reservoir 10 in the cylindrical portion.
- the insert plate 105b sits in the rest position in the conical region of the reservoir 10 and divides the container into two areas.
- an insert plate 105c which has a greater thickness and therefore is constructed solid and shockproof. A impact body is not necessary.
- the mandrel 118 extending into the intake manifold 11 is attached directly to the insert plate 105c.
- the insert plate 105c may have passage openings. In the present example, the diameter of the insert plate 105c is smaller than the inner diameter of the reservoir 10 in the cylindrical portion.
- the insert plate 105 c has no Druchlassö réelleen, since the dry ice snow can slip past the insert plate 105 c in the intake manifold 11.
- FIG. 4 shows a reservoir of an inventive device, wherein as a selection element 134 is connected to an inner container 109
- Advicemischelement 15 for conveying dry ice pellets is provided.
- FIG. 5 shows a reservoir of a device according to the invention, wherein as a selector member 144 is connected to an inner container 109 insertion plate 105 for conveying dry ice snow is provided. When replacing the selection element At the same time, the remaining snow remaining in the inner container 109 is removed from the device.
- the inner container 109 is movable relative to the container 10. He is in particular so attached that he has over the reservoir 10 game, so that the entire inner container 109 is vibrated.
- the vibrating means 102 comprises in this case the pneumatic cylinder 14 connected to the up and down along the longitudinal direction L intake manifold 11 by the impact of the intake manifold 11 on the impact body 107, the insert plate 105 is vibrated together with the inner container 109. Dry ice snow on the plate 105 is thereby screened through the passage openings 106, which are not explicitly shown in the figure, and sucked off through the intake connection 11.
- the reservoir can receive 10 21 dry ice, corresponding to 1 kg of dry ice snow or 1.5 kg dry ice pellets.
- the reservoir has approximately an inner diameter of 150 mm and a height of 160 mm.
- an inner container 109 with an insert plate 105 is preferably placed in the reservoir 10.
- the inner container 109 comprises a cylindrical 117 and a conical part 110, which are made of Polyelthylen.
- the wall thickness of the inner container 109 is about 10 mm and the height of the conical part 110 about 40 mm.
- the insert plate 105 is sandwiched between the cylindrical 117 and the conical 110 part.
- the insertion plate 105 is preferably one Square mesh made of stainless steel with a mesh size of 3 mm.
- the pneumatic cylinder 14 is operated at a frequency of 1-20 Hz and it provides for an axial amplitude of movement of the inner container 109 of about 1-20 mm, the dry ice snow results in a delivery rate of about 5-10 kg / h.
- the inner container with insertion plate can as an alternative selection element 104 as in FIG. 2 shown blending element 15 in the reservoir 10 or a, as in FIG. 4 shown, mounted in an inner container 109 Aufmischelement 15 are arranged.
- the device 1 can then be used to convey pellets.
- the device can thus be used both for cleaning sensitive surfaces (selection element inner container with insert plate for conveying dry ice snow) and for cleaning heavily soiled or few sensitive surfaces (selection element mixing element for promoting dry ice pellets).
- FIG. 6 also shows a reservoir 10 with an insert plate 105, which is supported here by springs, as a selection element 154.
- the insert plate 105 is additionally provided with a support element, here a support ring, 108.
- the support ring is not connected to the insertion plate 105 and pushes the plate 105 moved upwards again by its gravitational effect. Since the ring is not or at least not rigidly connected to the plate, it is catapulted vertically upward during the upward movement of the plate 105. The falling back of the ring 108 on the plate 105 ensures that it moves down again. The ring 108 beats falling back on the insert plate 105 and the resulting jerk leaves lying on the plate 105 dry ice through the passage openings 106 fall. At the same time, dry ice snow between ring 108 and plate 105 is forced through the ports.
- the support element 108 is preferably a metal or plastic ring having a wall thickness between 5 and 20 mm, preferably about 10 mm, and a height between 40 and 60 mm, preferably about 50 mm.
- the shaking means 102 comprises a pneumatic cylinder 14. This is connected to a thrust device acting from above, in the vorligenden example a hammer 114 which is along the longitudinal direction L up and down movable.
- the selection element 164 is in the present case an insertion plate 105 with passage openings 106.
- the insert plate 105 is vibrated. Dry ice on the plate is thereby sifted through the plate 105 and sucked through an intake 11.
- either dry ice snow or dry ice pellets can be promoted in this way.
- the shaking means 102 comprises an ultrasonic device 17. This is connected to a top-acting impact device which moves a connecting rod along the longitudinal direction L up and down.
- the selection element 174 is an insertion plate 105 with Through openings 106.
- the connecting rod is coupled directly to the insertion plate 105, so that the insertion plate 105 is shaken with a movement of the rod. Dry ice snow on the plate is thereby sifted through the plate 105 and sucked through an intake 11.
- the inner container 109 is in particular mounted so that he has play against the reservoir 10, so that the entire inner container is vibrated.
- the inner container 109 comprises a cylindrically shaped upper part 117 and a conically shaped lower part 110, which has at least one outlet opening 116.
- the vibrating means 102 comprises a pneumatic cylinder 14 and is connected to a shock device acting from above on the inner container 109, in particular on the conical part 110, in the present example with a hammer 114. The hammer 114 is moved up and down by the pneumatic cylinder 14 along the longitudinal axis L.
- the device also includes a coating agent 103, which is connected in this case via a drive rod 112 to a drive 111.
- the drive 111 thus drives with the drive rod 112 a scraping tool 113, for example in the manner of a Passevites.
- the scraping tool 113 is in contact with a Insert plate 105 with passage openings 106 and strips this insert plate 105 from.
- befindliches dry ice is conveyed by the scraping tool 113 through the insert plate 105 and sucked through an intake manifold 11.
- Figure a shows a square mesh fabric in which the spaces between a lattice-like structure form mesh passage openings 106a.
- the square mesh has an open screen area of 50-70%.
- a square mesh with a mesh of 3mm, a wire diameter of 1mm, a mesh count of 6.4 and an open screen area of 56% can be used.
- Figure b) form square, rectangular, oval or honeycomb-shaped recesses in a plate passage openings 106b1, 106b2, 106b3, 106b4.
- circular recesses in a plate form circular passage openings 106c. Through the recesses, a perforated plate is formed.
- the recesses 106d may also, as shown in Figure d), be arranged annular segment.
- the recesses can be cut out, for example with a laser or water jet, or punched out.
- FIG. 12 shows an inventive device 1 for cleaning with dry ice snow with a suction device 115.
- the dry ice snow is blasted by means of the device 1 on the surface, such as a vehicle.
- the suction device 115 sublimated gas and dissolved dirt particles sucked by means of the suction device 115.
- device 1 and suction device 115 are arranged so that the interior of the vehicle is cleaned.
- the device 1 and exhaust device 115 are mounted on opposite windows, allowing air, dry ice, particulate and gas flow through the vehicle interior.
- device 1 and suction device 115 are arranged so that the engine compartment of the vehicle is cleaned.
- the dry ice is blasted into the engine compartment with the bonnet open. Air, dry ice, particles and gas are sucked from below the engine compartment by means of the suction device 115.
- FIG. 13a shows a section of a like in FIG. 1 but shown modified apparatus showing a reservoir 10 provided with a shaking means 102 and a selection element 224 in a variant for the promotion of dry ice snow and dry ice pellets.
- the selection element 224 is a freely movable in the reservoir 110 ball 205.
- the ball is set by the reciprocating-movable intake manifold 11 in motion and rolls through the conical shape of the reservoir 10 back in the direction of the intake manifold eleventh
- the ball 205 on the one hand can loosen pellets and provides a stop surface for the intake manifold, which is movable against the ball 205 such that dry ice pellets between the stop surface and the suction end of the intake manifold 11 are crushed.
- the moving ball 205 can counteract the clumping of dry ice snow and serves to some extent also the portioning of dry ice snow, which can get past the ball 205 into the Anugstutzen.
- the use of the ball 205 as a selection element 224 may be sufficient to promote both pellets and snow.
- the reservoir 10 is provided with a ball 205 and with an insertion plate 105d with passage openings.
- the insert plate 105d keeps the ball 205 near the intake port and loosens the dry ice snow being conveyed in next. At the same time the slipping of further dry ice snow is allowed. In this way, reliably loosened dry ice cream is promoted.
- the insert plate 105d may be fixedly connected to the reservoir 10, loosely resting on a projection or, as shown in the figure, in the conical region on the inner surface of the reservoir 10.
- the cleaning effect can be further improved if the dry ice nor a blasting agent, such as glass, sand, plastic, corundum, steel, silicon carbide or calcium carbonate, is added, this applies both for cleaning with dry ice pellets as well as for cleaning with dry ice snow.
- the blasting agent can be mixed under the dry ice and with them be promoted together.
- the abrasive tends to trickle through the dry ice. In the course of the blasting process, therefore, initially a higher proportion of blasting agent is conveyed, which then decreases later.
- Figure 14a shows a schematic representation of a reservoir 10 of a further device according to the invention for cleaning with dry ice pellets and blasting agents in analogy to the device, as in FIG. 2 is shown.
- Figure 14a shows the reservoir 10 and as a selection element 104 for the promotion of pellets a mixing element 15.
- air and blasting 120 are sucked.
- the blasting agent 120 passes through openings 119 in the tube 26 in the reservoir 10 and mixes above the intake manifold 11 with the pellets. The mixture is then sucked together through the intake 11.
- FIG. 14b shows a schematic representation of a reservoir 10 of another device according to the invention for cleaning with dry ice snow and blasting agent in analogy to the device, as in FIG. 3a is shown.
- an insert plate 105a with passage openings 106 is located in the reservoir 10 as a selection element 124, an insert plate 105a with passage openings 106.
- the insert plate 105a is provided with a pipe 16. Through the tube 16 air and blasting 120 are sucked.
- the blasting agent 120 passes through openings 119 in the tube 16 in the reservoir 10 and mixes above the intake manifold 11 with the dry ice snow slipping through the openings 106 of the insert plate 105a as the reciprocating intake manifold 11 strikes against the pipe 16 connected to the plate 105a.
- the mixture is then sucked together through the intake 11.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Abgabe von wahlweise Trockeneisschnee oder Trockeneispellets mit den Merkmalen des Oberbegriffs der unabhängigen Patentansprüche.The invention relates to a device and a method for dispensing either dry ice snow or dry ice pellets with the features of the preamble of the independent claims.
Es ist bekannt, Oberflächen mittels Trockeneisgranulaten ("Pellets") zu reinigen. Bei den Pellets handelt es sich um verdichtetes und/oder gepresstes Trockeneis.It is known to clean surfaces by means of dry ice granules ("pellets"). The pellets are compacted and / or pressed dry ice.
Zum Ansaugen von Pellets aus einem Vorratsbehälter ist es bekannt, eine Strahlenpistole mit einer Druckluftleitung zu verbinden und die Pellets nach dem Venturiprinzip anzusaugen. Die Pellets werden durch einen Schlauch mit einer an dem freien Ende des Schlauchs vorgesehenen Strahlpistole gegen eine zu reinigende Oberfläche geschleudert.For sucking pellets from a storage container, it is known to connect a jet gun with a compressed air line and suck the pellets on the Venturi principle. The pellets are hurled against a surface to be cleaned by a hose having a blasting gun provided at the free end of the hose.
Die Druckluft kann gleichzeitig dazu genutzt werden, den Ansaugstutzen mittels einer Pneumatikanordnung hin und her zu bewegen. Ein solches Verfahren und eine entsprechende Vorrichtung sind beispielsweise in
Es ist andererseits bekannt, Oberflächen mittels Trockeneisschnees (auch "CO2-Schnee", im Folgenden "Schnee" genannt) zu reinigen.On the other hand, it is known to clean surfaces by means of dry ice snow (also called "CO2 snow", hereinafter referred to as "snow").
Unter Trockeneisschnee wird in der vorliegenden Anmeldung eine Ansammlung locker zusammenhängender CO2-Kristalle verstanden. Das Dichteverhältnis von Pellets und Schnee beträgt ungefähr 1 : 2/3.Dry ice snow in the present application is understood to mean an accumulation of loosely connected CO2 crystals. The density ratio of pellets and snow is approximately 1: 2/3.
Durch die geringere kinetische Energie der Kohlendioxidpartikel ist das CO2-Schneestrahlen ein deutlich weniger abrasives Verfahren als das Pellet-Strahlen und daher für das Reinigen empfindlicher Oberflächen geeignet. Das Pellet-Strahlen ist hingegen besser bei stärkeren Verschmutzungen und für gröberes Reinigen einzusetzen. Folglich ergänzen sich die beiden Verfahren.Due to the lower kinetic energy of the carbon dioxide particles, CO2 snow blasting is a significantly less abrasive process as the pellet blasting and therefore suitable for cleaning sensitive surfaces. On the other hand, pellet blasting is better for heavy soiling and for coarser cleaning. Consequently, the two methods complement each other.
Der Schnee kann ebenfalls durch einen Schlauch mit einer am freien Ende des Schlauchs vorgesehenen Strahlpistole gegen eine zu reinigende Oberfläche geschleudert werden ("Strahlen").The snow can also be thrown against a surface to be cleaned by a hose with a blasting gun provided at the free end of the hose ("blasting").
Während für die Reinigung mit Pellets das Strahlmittel zumeist vorproduziert werden kann, wird bei der Reinigung mit Trockeneisschnee der CO2-Schnee in der Regel als Teil des Gesamtprozesses kontinuierlich erzeugt. Damit wird einem Zusammenklumpen des Schnees vorgebeugt. Ein solches Verfahren und eine entsprechende Vorrichtung sind beispielsweise aus
Es hat sich allerdings gezeigt, dass die Reinigungswirkung von frisch produziertem Trockeneinsschnee weniger gut ist. Trockeneinsschnee, der eine gewisse Zeit abgestanden ist, wird körniger und eignet sich besser zum Reinigen.However, it has been shown that the cleaning effect of freshly produced dry snow is less good. Dry snow, which has been stale for some time, becomes more granular and more suitable for cleaning.
Andererseits neigt CO2-Schnee, insbesondere nach längerer Lagerung, aufgrund von Schwerkraft, Erwärmung und/oder Anlagerung von Kondenswasser zum Verklumpen und ist folglich schlechter oder gar nicht mehr förderbar.On the other hand, CO2 snow, especially after prolonged storage, due to gravity, heating and / or accumulation of condensation tends to clump and is therefore less or no longer eligible.
Das Zusammenklumpen kann auch verhindert werden, indem das Trockeneis in einer Düse verwirbelt wird und der Schnee erst beim Austritt aus der Düse erzeugt wird, wie es beispielsweise in
Ausserdem kann der Trockeneisschneebehälter in Vibration versetzt werden, wie z.B. in
Nach dem Stand der Technik gestaltet sich eine Vereinigung der beiden Techniken insbesondere deshalb schwierig, weil bei der Förderung von Schnee die Gefahr eines Verklumpens in der Förderungseinrichtung besteht und folglich die Leitungen verstopfen und/oder der Schnee nicht kontinuierlich nachfliesst. Es kann auch vorkommen, dass sich bei einer Anlage, die den Schnee mit Druckluft fördert, der Schnee um den Ansaugbereich herum ansammelt, dort verklumpt und nicht mehr abgesaugt werden kann. Es ist deshalb eine Aufgabe der vorliegenden Erfindung, die Nachteile des Bekannten zu vermeiden, insbesondere also eine Vorrichtung und ein Verfahren zur Abgabe von Schnee und zur Abgabe von wahlweise Pellets oder Schnee zu schaffen, wobei das Verklumpen von Schnee verhindert wird und/oder der Schnee wieder aufgelockert wird. Die erfindungsgemässe Vorrichtung und das erfindungsgemässe Verfahren sollen es ausserdem erlauben, auf möglichst einfache Art und Weise eine Vorrichtung zu schaffen, welche Platz sparend und kostengünstig einsetzbar ist. Zudem wird eine Möglichkeit gesucht, eine bestehende Vorrichtung zur Abgabe von Trockeneis-Pellets einfach und kostengünstig zu einer Vorrichtung zur Abgabe von Trockeneisschnee und/oder zur Abgabe von Trockeneisschnee oder Trockeneis-Pellets umzurüsten. Erfindungsgemäss wird diese Aufgabe mit Vorrichtungen und Verfahren mit den Merkmalen der unabhängigen Patentansprüche gelöst.In the prior art, a combination of the two techniques is particularly difficult because in the promotion of snow there is a risk of lumping in the conveyor and thus clog the lines and / or the snow does not flow continuously. It can also happen that in a system that promotes the snow with compressed air, the snow accumulates around the intake area, clumps there and can no longer be sucked. It is therefore an object of the present invention to avoid the disadvantages of the known, in particular, to provide a device and a method for delivering snow and for the delivery of either pellets or snow, wherein the clumping of snow is prevented and / or the snow is loosened again. The device according to the invention and the method according to the invention should also make it possible to create a device which is space-saving and cost-effective in the simplest possible way. In addition, a possibility is sought to convert an existing device for dispensing dry ice pellets simply and cost-effectively to a device for dispensing dry ice snow and / or for dispensing dry ice snow or dry ice pellets. According to the invention, this object is achieved with devices and methods having the features of the independent patent claims.
Die Platte ist da-mit Durchlassöffnungen versehen.The plate is there-provided with passage openings.
Die Platte, die in einen Vorratsbehälter zur Aufnahme von Trockeneisschnee eingesetzt werden kann, dient vorwiegend zum Auflockern und zum Dosieren von dem Trockeneisschnee. Der Trockeneisschnee liegt auf der Platte und kann in Portionen durch die Durchlassöffnungen fallen. Das Zusammenklumpen von Trockeneisschnee wird dadurch verhindert.The plate, which can be used in a storage container for holding dry ice snow, serves mainly for loosening and dosing of the dry ice snow. The dry ice snow lies on the plate and can fall in portions through the openings. The clumping of dry ice snow is thereby prevented.
Die Einsetzplatte kann eine flache, selbst tragende Struktur besitzen und brett- oder blechartig ausgebildet sein.The insert plate may have a flat, self-supporting structure and be formed brett- or sheet-like.
Die Platte kann auch einen Rahmenstruktur aufweisen, in welcher ein Sieb oder eine Lochblech aufgenommen ist.The plate may also have a frame structure in which a sieve or a perforated plate is accommodated.
Die Platte kann mit einem Auflageelement, insbesondere einem Auflagering, versehen sein. Das Auflageelement ist bevorzugt nicht fest mit der Platte verbundenen.The plate may be provided with a support element, in particular a support ring. The support element is preferably not firmly connected to the plate.
Wird die Platte in eine Vorrichtung zur Reinigung mit Trockeneis eingesetzt, so sorgt insbesondere ein auf die Platte aufgelegtes Auflageelement dafür, dass die beispielsweise mit Druckluft nach oben bewegte Platte durch die Gravitationswirkung des Auflageelements wieder nach unten gedrückt wird. Da das Auflageelement nicht, oder zumindest nicht starr, mit der Platte verbunden ist, wird es bei der Aufwärtsbewegung der Platte vertikal nach oben katapultiert. Das Zurückfallen des Auflageelements auf die Platte sorgt dafür, dass dieses wieder seine Ausgangsposition einnimmt. Das Auflageelement schlägt beim Zurückfallen auf die Einsetzplatte und der dadurch entstehende Ruck lässt auf der Platte liegendes Trockeneis durch die Durchlassöffnungen fallen. Gleichzeitig wird zwischen Auflageelement und Einsetzplatte befindlicher Trockeneisschnee durch die Durchlassöffnungen gedrückt.If the plate is inserted into a device for cleaning with dry ice, then in particular a support element placed on the plate ensures that the plate moved upwards, for example with compressed air, is pushed down again by the gravitational effect of the support element. Since the support element is not, or at least not rigidly, connected to the plate, it is catapulted vertically upward during the upward movement of the plate. The falling back of the support element on the plate ensures that this resumes its initial position. The support element strikes when falling back onto the insert plate and the resulting jolt causes dry ice lying on the plate to fall through the passage openings. At the same time, dry ice snow between the support element and the insert plate is pressed through the passage openings.
Die Einsetzplatte kann auch fest in einem Innenbehälter, der gegenüber dem Vorratsbehälter beweglich ist, montiert sein.The insert plate may also be fixedly mounted in an inner container which is movable relative to the reservoir.
Die Platte ist bevorzugt mit einem Anschlagelement versehen, auf das bei der Förderung von Trockeneisschnee ein Rüttelelement wirkt. Das Anschlagelement weist dazu vorteilhafterweise eine Anschlagfläche auf.The plate is preferably provided with a stop element on which acts in the promotion of dry ice snow a vibrating element. The stop element advantageously has a stop surface for this purpose.
Die Einsetzplatte kann ausserdem mit einer Luftansaugröhre verbunden sein. Bei der Luftansaugröhre kann es sich um ein länglich geformtes massives Element mit Öffnungen an beiden Enden handeln, welches inwendig hohl ist. Die Röhre kann zylindrisch geformt sein und/oder zumindest eine längs der Längsachse konstante Querschnittsfläche aufweisen. Die Ansaugröhre bietet einen bevorzugten Pfad für mit dem Trockeneis angesaugte Luft.The insert plate may also be connected to an air intake tube. The air intake tube may be an elongate shaped solid member having openings at both ends which is hollow internally. The tube may be cylindrically shaped and / or have at least one constant cross-sectional area along the longitudinal axis. The aspiration tube provides a preferred path for air drawn in with dry ice.
In einer bevorzugten Ausführung ist die Einsetzplatte mit einem Anschlagkörper, der eine Anschlagfläche aufweist, verbunden. Die Platte kann in diesem Fall durch direktes Anschlagen der Anschlagfläche gerüttelt werden.In a preferred embodiment, the insertion plate is connected to a stop body, which has a stop surface. The plate can be shaken in this case by direct abutment of the stop surface.
Die Platte kann ausserdem einen Dorn aufweisen, der in die Luftansaugröhre und/oder in die Auslassöffnung hineinragt. Der Dorn sorgt für eine axiale Führung.The plate may also have a spike which projects into the air intake tube and / or into the outlet opening. The mandrel ensures axial guidance.
Das Einsetzen der Platte sorgt dafür, dass eine Vorrichtung zur Reinigung mit Trockeneis-Pellets, wie beispielsweise in
Lässt sich die Platte wieder herausnehmen, so kann auf einfache Art und Weise wieder auf den Betrieb mit Trockeneis-Pellets umgerüstet werden. Die Kombination aus Trockeneis-Pellet-Reiniger und Einsetzplatte stellt also eine Vorrichtung zur Reinigung mit sowohl Trockeneis-Pellets als auch Trockeneisschnee dar.If the plate can be removed again, it can easily be converted back to operation with dry ice pellets. The combination of dry ice pellet cleaner and insert plate thus represents a device for cleaning with both dry ice pellets and dry ice snow.
In einer bevorzugten Ausführung weist die Platte ein Sieb oder Gitter auf, welches beispielsweise von einem Rahmen umfasst wird. Die Grösse und Anordnung der Durchlassöffnungen beeinflussen die Durchlassmenge und die räumlichen Verteilung des Trockeneisschnees. Die Grösse und Anordnung der Durchlassöffnungen und der Platte sind bevorzugt an die Geometrie des Vorratsbehälters und/oder der Auslassöffnung angepasst.In a preferred embodiment, the plate comprises a sieve or grid, which is for example covered by a frame. The size and arrangement of the passage openings influence the passage rate and the spatial distribution of the dry ice snow. The size and arrangement of the passage openings and the plate are preferably adapted to the geometry of the reservoir and / or the outlet opening.
Die Vorrichtung ist derart ausgebildet, dass eine Einsetzplatte mit Durchlassöffnungen, insbesondere wie oben beschrieben, vorgesehen ist. Die Platte befindet sich im Innern des Vorratsbehälters und unterteilt den Vorratsbehälter in zwei Bereiche, wobei sich im ersten Bereich der, insbesondere ungesiebte und kompaktere, Trockeneisschnee und im zweiten Bereich der durch die Platte geförderte, insbesondere gelockerte, Schnee befindet. Der Vorratsbehälter eignet sich zur Aufnahme von beispielsweise vorgängig produziertem Trockeneischnee oder vorgängig produzierten Trockeneis-Pellets.The device is designed such that an insertion plate with passage openings, in particular as described above, is provided. The plate is located inside the storage container and divides the storage container into two areas, wherein in the first region is the, in particular unsliced and more compact, dry ice snow and in the second region of the conveyed through the plate, in particular loosened, snow. The storage container is suitable for receiving, for example, previously produced dry ice cream or previously produced dry ice pellets.
Bei der Einsetzplatte handelt es sich um eine einsetz- und herausnehmbare Platte.The insert plate is an insertable and removable plate.
Sie ist mittels des Rüttelmittels rüttelbar und/oder mittels Abstreifmittels abstreifbar, so dass der Trockeneisschnee die Durchlassöffnungen durchdringt und nicht auf der Platte liegen bleibt.It can be vibrated by means of the shaking means and / or scraped off by means of a stripping means, so that the dry ice snow penetrates the passage openings and does not remain on the plate.
Bei dem Rüttelmittel kann es sich im ein mechanisch, hydraulisch, pneumatisch, elektromagnetisch oder piezoelektrisch getriebenes Rüttelmittel handeln.The vibrating means may be a vibrating means driven mechanically, hydraulically, pneumatically, electromagnetically or piezoelectrically.
Die Einsetzplatte kann zum Beispiel durch mechanische Stösse gerüttelt werden oder mittels Ultraschall.The insert plate can be shaken for example by mechanical shocks or by means of ultrasound.
Bei dem Abstreifmittel kann es sich beispielsweise um ein Schabwerkzeug, ein Rakel oder eine Bürste handeln, mittels derer der Schnee, ähnlich wie bei einem Passevite, durch die Durchlassöffnungen gepresst wird.The stripping means may be, for example, a scraping tool, a squeegee or a brush, by means of which the snow, similar to a Passevite, is pressed through the passage openings.
In einer bevorzugten Ausführung der Erfindung ist der Vorratsbehälter aus wärmetechnisch isolierendem Material gefertigt, wodurch der Schmelz- beziehungsweise Sublimiervorgang des Schnees deutlich verlangsamt wird. Der Trockeneisschnee muss also weniger häufig nachgefüllt werden.In a preferred embodiment of the invention, the reservoir is made of thermally insulating material, whereby the melting or Sublimiervorgang of the snow is significantly slowed down. The dry ice snow must therefore be refilled less frequently.
Das Einstellen der Rüttelfrequenz und/oder der Abstreiffrequenz erlaubt die Dosierung der pro Zeit durch die Platte geförderte Schneemenge.The setting of the shaker frequency and / or the stripping frequency allows the dosage of the amount of snow conveyed through the plate per time.
In einer bevorzugten Ausführung der oben beschriebenen Vorrichtung weist die Vorrichtung ausserdem eine Vorrichtung zur Produktion von Trockeneis auf.In a preferred embodiment of the device described above, the device also has an apparatus for producing dry ice.
Die Vorrichtung ist bevorzugt so klein und leicht dimensioniert, dass sie von Hand transportierbar ist. Dazu besitzt die Vorrichtung zum Beispiel Rollen oder ist auf einem Wagen transportierbar.The device is preferably so small and lightly dimensioned that it can be transported by hand. For this purpose, the device has for example roles or is transportable on a cart.
In einer bevorzugten Ausführung einer wie oben beschriebenen Vorrichtung mit Einsetzplatte ist das Rüttelmittel eine direkt oder indirekt auf die Platte wirkende Stossvorrichtung.In a preferred embodiment of one as described above Device with insertion plate is the Rüttelmittel a direct or indirect acting on the plate shock device.
Die Einsetzplatte kann gefedert befestigt oder aufliegend sein.The insert plate may be spring-mounted or overlying.
Die Stossvorrichtung kann einen beispielsweise periodisch auf die Platte einwirkenden Hammer umfassen, welcher die, beispielsweise gefedert befestigte, Platte in Schwingung versetzt. Dadurch kann ein kontinuierliches Hindurchrieseln von Trockeneisschnee erreicht werden.The impact device may comprise a hammer, for example, periodically acting on the plate, which vibrates the, for example, spring-mounted, plate vibrated. As a result, continuous trickling of dry ice snow can be achieved.
Alternativ oder zusätzlich kann der Vorratsbehälter selbst mittels des Rüttelmittels rüttelbar sein. Ein ausserhalb des Vorratsbehälters angebrachtes Rüttelmittel kann den Vorratsbehälter rütteln. Gleichzeitig kann eine, bevorzugt gefedert befestigte, Platte gerüttelt werden.Alternatively or additionally, the reservoir itself by means of the Rüttelmittels be vibrated. An outside of the reservoir attached shaking means can shake the reservoir. At the same time, a preferably spring-mounted plate can be shaken.
Bei einem aussen angebrachten Rüttelmittel könnte es sich um eine Stossvorrichtung handeln, welche insbesondere mit periodischem Stossen auf den Vorratsbehälter einwirkt.An externally mounted vibration means could be a shock device, which in particular acts with periodic poking on the reservoir.
In einer bevorzugten Ausführung der Vorrichtung liegt die Rüttelfrequenz bevorzugt zwischen 1 und 10 Hz. Die Rüttelamplitude der Platte beträgt bevorzugt zwischen 1 und 20 mm. Durch Einstellen der Rüttelfrequenz und der Rüttelamplitude kann der pro Zeit geförderte Schnee angepasst werden.In a preferred embodiment of the device, the vibration frequency is preferably between 1 and 10 Hz. The vibration amplitude of the plate is preferably between 1 and 20 mm. By adjusting the vibration frequency and the vibration amplitude, the snow conveyed per time can be adjusted.
In einer bevorzugten Ausführung der Vorrichtung ist der Vorratsbehälter mit einer Druckluftvorrichtung verbunden, mittels welcher das Fördergut abgebbar ist.In a preferred embodiment of the device, the reservoir is connected to a compressed air device, by means of which the conveyed material can be discharged.
Dazu kann der Behälter mit einer Förderleitung, insbesondere einer flexiblen Röhre, versehen sein, welche am einen Ende mit dem Behälter und am anderen Ende mit einer Druckluftpistole verbunden ist. Über die Pistole ist mittels der Druckluftvorrichtung ein Unterdruck in der Röhre erzeugbar, wodurch beispielsweise der durch die Einsetzplatte geförderte Schnee oder Trockeneis-Pellets angesaugt und durch die Druckluftpistole abgegeben werden können.For this purpose, the container may be provided with a delivery line, in particular a flexible tube, which at one end with the Container and connected at the other end with a compressed air gun. About the gun, a negative pressure in the tube can be generated by means of the compressed air device, whereby, for example, sucked through the insert plate snow or dry ice pellets can be sucked and discharged through the compressed air gun.
Die Förderleitung kann als frei beweglicher Ansaugstutzen ausgeführt und mit einem Oszillationsventil ansteuerbar sein. Der Ansaugstutzen kann dann als Rüttelmittel gegen eine Anschlagfläche auf der Einsetzplatte oder dem Vorratsbehälter einwirken.The delivery line can be designed as a freely movable intake manifold and be controlled with an oscillation valve. The intake manifold can then act as a jar against a stop surface on the insert plate or the reservoir.
Alternativ zur Einsetzplatte kann das mindestens eine Auswahlelement zum Festlegen von Pellets als Fördergut ein insbesondere vollständig im Innern des Vorratsbehälters befindliches Aufmischelement sein, das bevorzugt parallel zu einer Achse hin und her bewegbar ist.As an alternative to the insertion plate, the at least one selection element for fixing pellets as material to be conveyed may be an admixing element, in particular located completely inside the reservoir, which is preferably movable back and forth parallel to an axis.
Bei dem Aufmischelement handelt es sich beispielsweise um eine Stange oder ein Rohr, an welcher senkrecht zur Achse radial sternförmig Querelemente angebracht sind, die der Zentrierung dienen. Mittels des Aufmischelements kann verhindert werden, dass Trockeneis-Pellets zusammenkleben und die Vorrichtung blockieren. Das Aufmischelement kann ausserdem eine Anschlagfläche aufweisen, gegen die während des Betriebes ein beweglicher Ansaugstutzen schlägt und dabei Trockeneis-Pellets oder Klumpen von Trockeneis-Pellets zerschlägt.The mixing element is, for example, a rod or a tube on which radial star-shaped transverse elements are mounted perpendicular to the axis and serve for centering. By means of the mixing element can be prevented that dry ice pellets stick together and block the device. The blending element may also have an abutment surface against which a movable intake manifold strikes during operation, thereby smashing dry ice pellets or lumps of dry ice pellets.
Vorteilhafterweise umfasst das Aufmischelement ausserdem einen in den Ansaugstutzen hineinreichende Dorn, die ein Verkeilen der Pellets im Ansaugstutzen verhindert und die Ansaugöffnung des Ansaugstutzens freihält.Advantageously, the admixing element further comprises a spigot extending into the intake manifold, which prevents wedging of the pellets in the intake manifold and keeps the intake opening of the intake manifold free.
In einer weiteren vorteilhaften Ausführung ist das Aufmischelement mit einem Innenbehälter verbunden.In a further advantageous embodiment, the mixing element is connected to an inner container.
Entscheidet sich ein Benutzer für ein anderes Auswahlelement und entfernt beispielsweise das Aufmischelement, um eine Einsetzplatte in den Behälter einzusetzen, so kann er mit dem Aufmischelement und dem Innenbehälter die restlichen im Behälter verbliebenen Pellets entfernen. Umgekehrt kann er mit dem Aufmischelement gleich Pellets in den Behälter füllen, wenn er diese bereits in den Innenbehälter gegeben hat.If a user opts for another selection element and, for example, removes the blending element to insert an insert plate into the container, he can use the blending element and the inner container to remove the remaining pellets remaining in the container. Conversely, he can fill with the mixing element equal pellets in the container, if he has already given this in the inner container.
Analoges gilt für das Einfüllen und Entnehmen von Trockeneisschnee, wenn die Einsetzplatte mit einem Innenbehälter verbunden ist.The same applies to the filling and removal of dry ice snow when the insert plate is connected to an inner container.
In einer weiteren bevorzugten Ausführung der Vorrichtung ist als Auswahlelement ein an der Vorrichtung angebrachter Schalter vorgesehen, der das Rüttel- und/oder Streichmittel gemäss der gewünschten Förderart einstellt. Zum Beispiel kann für die Förderung von Trockeneisschnee eine bestimmte Rüttelfrequenz und/oder Rüttelamplitude eingestellt werden und für die Förderung von Trockeneis-Pellets eine andere.In a further preferred embodiment of the device, a switch attached to the device is provided as the selection element, which adjusts the vibrating and / or brushing means according to the desired conveying mode. For example, a certain shaking frequency and / or vibration amplitude can be set for the promotion of dry ice snow and another for the promotion of dry ice pellets.
Wahlweise dient die Vorrichtung zur Förderung von Pellets oder Trockeneisschnee.Optionally, the device serves to convey pellets or dry ice snow.
In einer weiteren bevorzugten Ausführung der Vorrichtung ist die Vorrichtung mit einer Absaugvorrichtung versehen. Beispielsweise kann Trockeneisschnee auf eine Oberfläche, z.B. der Innenraum eines Fahrzeugs, gestrahlt werden, während gleichzeitig das sublimierte CO2-Gas und die durch das Strahlen gelösten Schmutzpartikel abgesaugt werden. Die Absaugung wird so angeordnet, dass mit dem Trockeneisstrahl möglichst in einem Bereich, der von der der Absaugung erfasst ist, gestrahlt werden kann. Die Anordnung von Trockeneisstrahlgerät und Absaugung oder Gebläses ist bevorzugt so gewählt, dass die abgelöste Verschmutzung möglichst direkt aus dem Innenraum, zum Beispiel dem Fahrzeuginnen- oder Motorenraum gelangen kann.In a further preferred embodiment of the device, the device is provided with a suction device. For example For example, dry ice snow may be blasted onto a surface, such as the interior of a vehicle, while simultaneously aspirating the sublimated CO2 gas and the debris released by blasting. The suction is arranged so that it can be blasted with the dry ice jet as far as possible in a region which is covered by the suction. The arrangement of dry ice blasting device and suction or blower is preferably chosen so that the detached pollution can get as directly as possible from the interior, for example the vehicle interior or engine compartment.
Beim erfindungsgemässen Verfahren zur Abgabe von wahlweise entweder Trockeneisschnee oder Trockeneis-Pellets wird in einem ersten Schritt entweder Trockeneisschnee oder Trockeneis-Pellets als Fördergut ausgewählt und insbesondere im Vorratsbehälter deponiert. Die Förderart wird gemäss der Auswahl des Förderguts festgelegt. Anschliessend kann das sich im Vorratsbehälter befindende Fördergut gemäss der gewählten Förderart gefördert und abgegeben werden.In the method according to the invention for dispensing either dry ice snow or dry ice pellets, either dry ice snow or dry ice pellets are selected as conveyed material in a first step and are deposited in particular in the storage container. The type of funding is determined according to the selection of the conveyed goods. Subsequently, the conveyed material located in the storage container can be conveyed and discharged according to the selected type of delivery.
Die Wahl der Förderart besteht darin, bei der Wahl von Trockeneis-Pellets als Fördergut ein Aufmischelement einzusetzen oder bei der Wahl von Trockeneisschnee eine wie oben beschriebene Platte mit Durchlassöffnungen einzusetzen.The choice of the type of delivery is to use a mixing element in the choice of dry ice pellets as conveyed or to use in the choice of dry ice snow as described above plate with passage openings.
Die Förderart ist entsprechend das Rütteln eines Aufmischelements oder das Rütteln einer Einsetzplatte mit Durchlassöffnungen mit einem Rüttelmittel wie beispielsweise oben beschrieben. Für die Abgabe wird bevorzugt eine Druckluftanordnung verwendet, wobei dazu insbesondere ein Unterdruck im Vorratsbehälter erzeugt wird.The conveying mode is correspondingly the shaking of a mixing element or the shaking of an insert plate with passage openings with a shaking means such as described above. For the delivery, a compressed air arrangement is preferably used, for which purpose in particular a negative pressure in the storage container is generated.
Erfindungsgemäss wird eine Einsatzplatte mit Durchlassöffnungen, insbesondere wie oben beschrieben, zum Fördern von Trockeneisschnee in einer Vorrichtung zur Reinigung mit Trockeneis verwendet. Mit der Verwendung einer solchen Platte in einem an sich bekannten Gerät kann dieses Gerät auf einfache Weise für eine alternativen Anwendung, nämlich das Reinigen empfindlicher Oberflächen, umgerüstet werden oder eine Reinigungsvorrichtung mit Trockeneis-Pellets wird zu einer Reinigungsvorrichtung mit sowohl Trockeneis-Pellets als auch Trockeneisschnee aufgewertet.According to the invention, an insert plate with passage openings, in particular as described above, is used for conveying dry ice snow in a device for cleaning with dry ice. With the use of such a plate in a per se known device, this device can be easily converted for an alternative application, namely the cleaning of sensitive surfaces, or a cleaning device with dry ice pellets becomes a cleaning device with both dry ice pellets and dry ice snow upgraded.
Das Verfahren eignet sich besonders zur Reinigung von begrenzten Innenräumen, wie beispielsweise dem Motorraum eines Fahr- oder Flugzeuges oder dem Innenraum oder der Kabine eines Fahr- oder Flugzeuges.The method is particularly suitable for cleaning of limited indoor spaces, such as the engine compartment of a vehicle or aircraft or the interior or the cabin of a vehicle or aircraft.
Dem Trockeneis kann zu diesem Zweck ein Duft- und/oder Pflegemittel hinzugefügt werden.The dry ice can be added for this purpose, a fragrance and / or care agent.
Die Erfindung wird im Folgenden in Ausführungsbeispielen und anhand der Zeichnungen näher erläutert. Es zeigen:
Figur 1- eine schematische Darstellung einer Vorrichtung zum Reinigen mit Trockeneis-Pellets aus dem Stand der Technik;
- Figur 2
- eine schematische Darstellung des Vorratsbehälters einer erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Pellets;
- Figur 3a
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen;
- Figur 3b
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer zweiten Variante für eine Einsetzplatte;
- Figur 3c
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer dritten Variante für eine Einsetzplatte;
- Figur 4
- eine schematische Darstellung des Vorratsbehälters einer erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Pellets mit einem Innenbehälter;
- Figur 5
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen in einem Innenbehälter;
- Figur 6
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen versehen mit einem Auflagering;
- Figur 7
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen und einem von oben wirkenden Rüttelmittel;
- Figur 8
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen und einem von oben wirkenden Rüttelmittel;
- Figur 9
- eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis mit einem rüttelbaren Innenbehälters, wobei das Rüttelmittel von oben wirkt;
Figur 10- eine schematische Darstellung eines Vorratsbehälters der erfindungsgemässen Vorrichtung mit einem Streichmittel;
Figur 11- eine schematische Darstellung verschiedener Varianten von Durchlassöffnungen;
- Figur 12
- eine schematische Darstellung einer erfindungsgemässen Vorrichtung zur Reinigung mit Trockeneisschnee mit einer Absaugvorrichtung mit zwei Anordnungsvarianten a) und b);
- Figur 13a
- eine schematische Darstellung eines Vorratsbehälters einer weiteren erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Pellets und Trockeneis-Schnee;
- Figur 13b
- eine schematische Darstellung eines Vorratsbehälters einer weiteren erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Schnee;
- Figur 14a
- eine schematische Darstellung eines Vorratsbehälters einer weiteren erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Pellets und Strahlmittel;
- Figur 14b
- eine schematische Darstellung eines Vorratsbehälters einer weiteren erfindungsgemässen Vorrichtung zum Reinigen mit Trockeneis-Schnee und Strahlmittel.
- FIG. 1
- a schematic representation of an apparatus for cleaning with dry ice pellets from the prior art;
- FIG. 2
- a schematic representation of the reservoir of an inventive device for cleaning with dry ice pellets;
- FIG. 3a
- a schematic representation of a reservoir of an inventive device with an insert plate with passage openings;
- FIG. 3b
- a schematic representation of a reservoir of an inventive device with a second variant of an insertion plate;
- Figure 3c
- a schematic representation of a reservoir of an inventive device with a third variant of an insertion plate;
- FIG. 4
- a schematic representation of the reservoir of an inventive device for cleaning with dry ice pellets with an inner container;
- FIG. 5
- a schematic representation of a reservoir of an inventive device with an insert plate with passage openings in an inner container;
- FIG. 6
- a schematic representation of a reservoir of an inventive device with an insert plate with passage openings provided with a support ring;
- FIG. 7
- a schematic representation of a reservoir of a device according to the invention with an insertion plate with passage openings and a shaking means acting from above;
- FIG. 8
- a schematic representation of a reservoir of a device according to the invention with an insertion plate with passage openings and a shaking means acting from above;
- FIG. 9
- a schematic representation of a reservoir of an inventive device for cleaning with dry ice with a vibratable inner container, wherein the Rüttelmittel acts from above;
- FIG. 10
- a schematic representation of a reservoir of the inventive device with a coating agent;
- FIG. 11
- a schematic representation of different variants of passage openings;
- FIG. 12
- a schematic representation of an inventive device for cleaning with dry ice snow with a suction device with two arrangement variants a) and b);
- FIG. 13a
- a schematic representation of a reservoir of another inventive device for cleaning with dry ice pellets and dry ice snow;
- FIG. 13b
- a schematic representation of a reservoir of another inventive device for cleaning with dry ice snow;
- Figure 14a
- a schematic representation of a reservoir of another inventive device for cleaning with dry ice pellets and blasting agent;
- FIG. 14b
- a schematic representation of a reservoir of another inventive device for cleaning with dry ice snow and blasting agent.
In
Die
Bei der in
Bei der in
Bei der in
Der Innenbehälter 109 ist gegenüber dem Behälter 10 beweglich. Er ist insbesondere so angebracht, dass er gegenüber dem Vorratsbehälter 10 Spiel hat, so dass der gesamte Innenbehälter 109 rüttelbar ist.The
Das Rüttelmittel 102 umfasst in diesem Fall den Pneumatikzylinder 14 verbunden mit dem sich entlang der Längsrichtung L auf- und abbewegenden Ansaugstutzen 11. Durch das Auftreffen des Ansaugstutzens 11 auf dem Aufschlagkörper 107 wird die Einsetzplatte 105 zusammen mit dem Innenbehälter 109 gerüttelt. Sich auf der Platte 105 befindender Trockeneisschnee wird dadurch durch die in der Figur nicht explizit gezeigten Durchlassöffnungen 106 gesiebt und durch den Ansaugstutzen 11 abgesaugt.The vibrating means 102 comprises in this case the
In einer Ausführung der Erfindung kann der Vorratsbehälter 10 21 Trockeneis, entsprechend 1 kg Trockeneeisschnee oder 1.5 kg Trockeneispellets aufnehmen. Der Vorratsbehälter weist dazu in etwa einen Innendurchmesser von 150 mm und eine Höhe von 160 mm auf.In one embodiment of the invention, the reservoir can receive 10 21 dry ice, corresponding to 1 kg of dry ice snow or 1.5 kg dry ice pellets. The reservoir has approximately an inner diameter of 150 mm and a height of 160 mm.
Zur Förderung von Trockeneisschnee wird in den Vorratsbehälter 10 bevorzugt ein Innenbehälter 109 mit einer Einsetzplatte 105 gesetzt. Der Innenbehälter 109 umfasst einen zylindrischen 117 und einem konischen Teil 110, die aus Polyelthylen gefertigt sind. Die Wandstärke des Innenbehälters 109 beträgt etwa 10 mm und die Höhe des konischen Teils 110 etwa 40 mm. Die Einsetzplatte 105 ist zwischen dem zylindrischen 117 und dem konischen 110 Teil eingefasst. Die Einsetzplatte 105 ist bevorzugt ein Quadratmaschengewebe aus rostfreiem Stahl mit einer Maschenweite von 3 mm.To promote dry ice snow, an
Wird der Pneumatikzylinder 14 bei einer Frequenz von 1-20 Hz betrieben und sorgt er für einen axiale Bewegungsamplitude des Innenbehälter 109 von etwa 1-20 mm, so ergibt sich für den Trockeneisschnee eine Förderrate von etwa 5-10 kg/h.If the
Anstelle des Innenbehälters mit Einsetzplatte kann als alternatives Auswahlelement 104 ein wie in
Durch das Einsetzten eines geeigneten Auswahlelements kann die Vorrichtung also sowohl zum Reinigen empfindlicher Flächen (Auswahlelement Innenbehälter mit Einsetzplatte zur Förderung von Trockeneisschnee) als auch zum Reinigen stark verschmutzter oder wenige empfindlicher Flächen (Auswahlelement Aufmischelement zur Förderung von Trockeneispellets) benutzt werden.By using a suitable selection element, the device can thus be used both for cleaning sensitive surfaces (selection element inner container with insert plate for conveying dry ice snow) and for cleaning heavily soiled or few sensitive surfaces (selection element mixing element for promoting dry ice pellets).
Bei dem Auflageelement 108 handelt es ich bevorzugt um einen Ring aus Metall oder Kunststoff, mit einer Wandstärke zwischen 5 und 20mm, bevorzugt etwa 10 mm, und einer Höhe zwischen 40 und 60 mm, bevorzugt etwa 50 mm.The
Das so geförderte Trockeneis wird durch den Ansaugstutzen 11 abgesaugt.The thus-promoted dry ice is sucked through the
Bei der in
Bei der in
Bei der in
Bei der in
In
In Abbildung b) bilden quadratische, rechteckige, ovale oder wabenförmige Ausnehmungen in einer Platte Durchlassöffnungen 106b1, 106b2, 106b3, 106b4.In Figure b) form square, rectangular, oval or honeycomb-shaped recesses in a plate passage openings 106b1, 106b2, 106b3, 106b4.
In Abbildung c) bilden kreisförmige Ausnehmungen in einer Platte Kreis-Durchlassöffnungen 106c. Durch die Ausnehmungen wird eine Lochplatte gebildet.In Figure c), circular recesses in a plate form
Die Ausnehmungen 106d können auch, wie in Abbildung d) gezeigt ist, ringsegmentförmig angeordent sein.The
Die Ausnehmungen können ausgeschnitten, zum Beispiel mit einem Laser oder Wasserstrahl, oder ausgestanzt sein.The recesses can be cut out, for example with a laser or water jet, or punched out.
In Anordnungsvariante a) sind Vorrichtung 1 und Absaugvorrichtung 115 so angeordnet, dass der Innenraum des Fahrzeugs gereinigt wird. Die Vorrichtung 1 und Absaugvorrichtung 115 sind an gegenüberliegenden Fenstern angebracht, was einen Luft- Trockeneis-, Partikel- und Gas-Strom durch das Fahrzeuginnere erlaubt.In arrangement variant a)
In Anordnungsvariante b) sind Vorrichtung 1 und Absaugvorrichtung 115 so angeordnet, dass der Motorraum des Fahrzeugs gereinigt wird. Das Trockeneis wird dabei bei geöffneter Motorhaube in den Motorraum gestrahlt. Luft, Trockeneis, Partikel und Gas werden von unterhalb des Motorraums mittels der Absaugvorrichtung 115 abgesaugt.In arrangement variant b)
Die
Im gezeigten Beispiel ist das Auswahlelement 224 eine frei im Vorratsbehälter 110 bewegliche Kugel 205. Die Kugel wird von dem hin- und her-beweglichen Ansaugstutzen 11 in Bewegung versetzt und rollt durch die konische Form des Vorratsbehälters 10 wieder in Richtung des Ansaugstutzens 11.In the example shown, the
Die Kugel 205 vermag einerseits Pellets aufzulockern und bietet eine Anschlagfläche für den Ansaugstutzen, der derart gegen die Kugel 205 bewegbar ist, dass Trockeneispellets zwischen der Anschlagfläche und dem Ansaugende des Ansaugstutzens 11 zerkleinert werden.The
Andererseits kann die sich bewegende Kugel 205 dem Verklumpen von Trockeneisschnee entgegenwirken und dient bis zu einem gewissen Grad auch der Portionierung von Trockeneisschnee, der an der Kugel 205 vorbei in den Anugstutzen gelangen kann.On the other hand, the moving
Beispielsweise für frisch hergestellten Trockeneisschnee und/oder frisch hergestellte Trockeneispellets kann die Verwendung der Kugel 205 als Auswahlelement 224 ausreichen, um sowohl Pelletes, als auch Schnee fördern zu können.For example, for freshly prepared dry ice snow and / or freshly prepared dry ice pellets, the use of the
Trockeneisschnee lässt sich besonders gut fördern, wenn wie in
Die Einsetzplatte 105d sorgt dafür, dass die Kugel 205 in der Nähe des Ansaugstutzens bleibt und den Trockeneisschnee lockert, der in als nächstes gefördert wird. Gleichzeitig wird das Nachrutschen von weiterem Trockeneisschnee erlaubt. Auf diese Weise wird zuverlässig gelockerter Trockeneischnee gefördert.The insert plate 105d keeps the
Die Einsetzplatte 105d kann fest mit dem Vorratsbehälter 10 verbunden sein, locker auf eine Vorsprung oder, wie in der Figur gezeigt, in dem konischen Bereich auf der Innenfläche des Vorratsbehälters 10 aufliegen.The insert plate 105d may be fixedly connected to the
Die Reinigungswirkung kann noch verbessert werden, wenn dem Trockeneis noch ein Strahlmittel, wie Glas, Sand, Kunststoff, Korund, Stahl, Siliciumcarbid oder Calciumkarbonat, zugesetzt wird, dies gilt sowohl für die Reinigung mit Trockeneispellets als auch für die Reinigung mit Trockeneisschnee. Dazu kann das Strahlmittel unter das Trockeneis gemischt und mit dieem zusammen gefördert werden. Das Strahlmittel tendiert allerdings dazu, durch das Trockeneis hindurch zu rieseln. Im Verlauf des Strahlprozesses wird daher anfangs ein höherer Anteil an Strahlmittel gefördert, der dann später abnimmt.The cleaning effect can be further improved if the dry ice nor a blasting agent, such as glass, sand, plastic, corundum, steel, silicon carbide or calcium carbonate, is added, this applies both for cleaning with dry ice pellets as well as for cleaning with dry ice snow. For this purpose, the blasting agent can be mixed under the dry ice and with them be promoted together. The abrasive, however, tends to trickle through the dry ice. In the course of the blasting process, therefore, initially a higher proportion of blasting agent is conveyed, which then decreases later.
Es hat sich daher als vorteilhaft erwiesen, wenn das Strahlmittel erst im Verlauf des Strahlprozesses dem Trockeneis zudosiert wird.It has therefore proved to be advantageous if the blasting agent is metered into the dry ice only in the course of the blasting process.
Bei der in
Die Mischung wird dann zusammen durch den Ansaugstutzen 11 abgesaugt.The mixture is then sucked together through the
Claims (15)
- Device (1) for selectively dispensing dry ice snow or dry ice pellets as material to be conveyed, comprising- a storage container (10) for receiving dry ice characterized in that- the device has a vibrating means (102) and/or scraping means (103), wherein an insert plate (105; 105a; 105b; 105c; 105d) with through-openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d), which is suitable in that the dry ice snow lies on the plate and can fall in portions through the through-openings, which is located inside the storage container (10), divides the storage container (10) into two regions and can be vibrated by means of the vibrating means (102) and/or can be stripped by means of the scraping means (103), is provided, or characterized in that- the device has a vibrating means (102) and a ball is located inside the storage container and can be vibrated by means of the vibrating means.
- Device according to Claim 1, characterized in that a blasting agent (120) can be supplied, in particular can be sucked up through a pipe (16), to the dry ice.
- Device according to one of Claims 1 to 2, characterized in that the vibrating means (102) is an impact device (114), in particular acting on the plate (105; 105a; 105b; 105c; 105d).
- Device according to one of Claims 1 to 3, characterized in that the storage container (10) can be vibrated by means of the vibrating means (102), which is preferably an impact device (114) acting on the storage container (10) from outside the storage container (10).
- Device according to one of Claims 1 to 4, characterized in that the vibrating means (102) causes a vibration frequency of 1-10 Hz and/or a vibration amplitude of 1-20 mm.
- Device according to one of Claims 1 to 5, characterized in that the storage container (10) is connectable to a compressed air device (101), by means of which the material to be conveyed can be dispensed.
- Device according to one of Claims 1 to 6, characterized by an extraction device (115), by means of which sublimated CO2 gas and particles can be extracted.
- Device according to one of Claims 1 to 7, characterized in that the insert plate (105; 105a; 105b; 105c; 105d) is provided with a bearing element (108) preferably not connected to the insert plate (105; 105a; 105b; 105c; 105d).
- Device according to one of Claims 1 to 7, characterized in that the insert plate (105; 105a; 105b; 105c; 105d) is connected to an inner container (109) which is movable relative to the storage container (10) so that the entire inner container (109) can be vibrated, wherein the inner container comprises in particular a cylindrical part (117).
- Device according to one of Claims 1 to 9, characterized in that the insert plate (105; 105a; 105b; 105c; 105d) has a sieve or grate.
- Method for selectively dispensing either dry ice snow or dry ice pellets, containing the following steps- selecting either dry ice snow or dry ice pellets as material to be conveyed,- determining a type of conveyance according to the selection of the material to be conveyed, characterized in that the type of conveyance is determined, when dry ice snow is selected, by inserting an insert plate (105) with through-openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d), and, when dry ice pellets are selected, by inserting a mixing element (15) into a storage container (10) of a device for dispensing dry ice.
- Method according to Claim 11, characterized in that the type of conveyance is either the vibration of a mixing element (15) or the vibration of an insert plate (105) with through-openings (106; 106a; 106b1, 106b2 106b3, 106b4; 106c; 106d) by means of a vibrating means (102) and/or is the, stripping of an insert plate (105; 105a; 105b; 105c; 105d) by means of a scraping means (103).
- Method according to Claim 11 or 12, characterized in that the quantity conveyed per unit of time is determined by adjusting the vibration and/or stripping frequency, the vibration amplitude and the selection of the size of the through-openings (106; 106a; 106b1, 106b2 106b3, 106b4; 106c; 106d).
- Method according to one of Claims 11 to 13, characterized in that the dry ice snow is dispensed by means of a compressed air arrangement (101), in particular by means of the generation of a negative pressure.
- Method according to one of Claims 11 to 14, containing the further steps:- blasting a surface with dry ice snow, in particular by means of a device according to at least one of Claims 1 to 9;- extracting particles and gas by means of an extraction device (115).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11745962.8A EP2605887B1 (en) | 2010-08-16 | 2011-08-16 | Device and method for dispensing dry ice snow |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10172867A EP2420353A1 (en) | 2010-08-16 | 2010-08-16 | Device and method for dispensing dry ice snow |
EP11745962.8A EP2605887B1 (en) | 2010-08-16 | 2011-08-16 | Device and method for dispensing dry ice snow |
PCT/EP2011/064070 WO2012022735A1 (en) | 2010-08-16 | 2011-08-16 | Device and method for dispensing dry ice snow |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2605887A1 EP2605887A1 (en) | 2013-06-26 |
EP2605887B1 true EP2605887B1 (en) | 2015-10-14 |
Family
ID=43661991
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10172867A Withdrawn EP2420353A1 (en) | 2010-08-16 | 2010-08-16 | Device and method for dispensing dry ice snow |
EP11745962.8A Active EP2605887B1 (en) | 2010-08-16 | 2011-08-16 | Device and method for dispensing dry ice snow |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10172867A Withdrawn EP2420353A1 (en) | 2010-08-16 | 2010-08-16 | Device and method for dispensing dry ice snow |
Country Status (3)
Country | Link |
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US (1) | US9975216B2 (en) |
EP (2) | EP2420353A1 (en) |
WO (1) | WO2012022735A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2832499A1 (en) * | 2013-07-29 | 2015-02-04 | Dry-Ice-Energy GmbH | Device for metering of blasting material |
US10099344B2 (en) * | 2016-04-19 | 2018-10-16 | Joseph P. Sergio | Dry ice and abbrasive blasting media apparatus and method |
GB201902893D0 (en) * | 2019-03-04 | 2019-04-17 | Rolls Royce Plc | Apparatus and method for generating ice pellets |
SK289167B6 (en) * | 2019-03-31 | 2024-02-28 | Ics Ice Cleaning Systems S. R. O. | Dry ice granulate size reduction device for dry ice cleaning equipment |
CH717501B1 (en) | 2020-06-05 | 2023-06-30 | Desisa Gmbh | Device for dispensing dry ice and/or dry ice snow. |
RU2765648C1 (en) * | 2021-04-09 | 2022-02-01 | Общество с ограниченной ответственностью «ИРБИС ТЕХНОЛОГИИ» | Method for cleaning solid cryogenic matter particles and a device for its implementation |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US1272222A (en) * | 1917-02-17 | 1918-07-09 | Charlotte E Clayton | Cooking vessel. |
US3670516A (en) | 1970-02-11 | 1972-06-20 | Air Reduction | Machine for making dry ice pellets |
US3786644A (en) | 1972-06-02 | 1974-01-22 | Airco Inc | System for changing the static electrical charge on co{11 {11 ice particles |
US4624997A (en) | 1984-09-28 | 1986-11-25 | Union Carbide Corporation | Article molded from a blend of a poly(aryl ether ketone) and a poly(aryl ether sulfone) |
US4735135A (en) * | 1986-11-07 | 1988-04-05 | Walker Lynn F | Utensil assembly for cooking vessels |
US5947800A (en) * | 1997-03-10 | 1999-09-07 | Empire Abrasive Equipment Company | Pneumatic suction surface blasting apparatus with an improved media delivery regulating system |
US20030064665A1 (en) * | 2001-09-28 | 2003-04-03 | Opel Alan E. | Apparatus to provide dry ice in different particle sizes to an airstream for cleaning of surfaces |
JP2008528311A (en) * | 2005-01-31 | 2008-07-31 | コールド ジェット エルエルシィ | Particle blast cleaning device with a pressurized container |
DE102005005638B3 (en) | 2005-02-05 | 2006-02-09 | Cryosnow Gmbh | Method for cleaning, activating or treating workpieces using carbon dioxide snow streams comprises adding a carbon dioxide mixture via a nozzle opening of a mixing chamber into which a central gas stream and further processing |
DE502006001660D1 (en) | 2005-09-28 | 2008-11-13 | Zeintra Ag | Apparatus and method for dry ice cleaning |
US7673638B1 (en) * | 2006-06-16 | 2010-03-09 | Western Digital Technologies, Inc. | System and method to monitor particles removed from a component |
FR2911809A1 (en) * | 2007-01-30 | 2008-08-01 | Christian Diat | Dry abrasive powder diffusing device for pneumatic cleaning tool, has stage level including mixing zone to mix abrasive powder and compressed air, and to supply mixture to pneumatic cleaning tool via outlet duct |
DE102008025361B3 (en) * | 2008-05-20 | 2009-03-19 | Alfred Kärcher Gmbh & Co. Kg | Dry-ice blasting device for producing mixture of propellant gas and dry ice granulate, has conveying element movable in discharge position, and conveying chamber aligned with discharge opening of conveying device in discharge position |
-
2010
- 2010-08-16 EP EP10172867A patent/EP2420353A1/en not_active Withdrawn
-
2011
- 2011-08-16 EP EP11745962.8A patent/EP2605887B1/en active Active
- 2011-08-16 WO PCT/EP2011/064070 patent/WO2012022735A1/en active Application Filing
- 2011-08-16 US US13/817,072 patent/US9975216B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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WO2012022735A1 (en) | 2012-02-23 |
EP2605887A1 (en) | 2013-06-26 |
EP2420353A1 (en) | 2012-02-22 |
US20130139853A1 (en) | 2013-06-06 |
US9975216B2 (en) | 2018-05-22 |
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