EP2420353A1 - Device and method for dispensing dry ice snow - Google Patents

Abstract

The insert plate (105) is inserted into an inner container (109) in storage unit (10) of ice dispensing device and provided with passage openings (106) for enabling fall of ice pellets. A support element is attached to the insert plate which is vibrated by mechanical force or ultrasound vibration so as to move the ice pellets to the openings. Independent claims are included for the following: (1) ice dispensing device; and (2) ice dispensing method.

Description

The invention relates to an apparatus and a method for dispensing dry ice snow with the features of the preamble of the independent claims.

It is known to clean surfaces by means of dry ice granules ("pellets"). The pellets are compacted and / or pressed dry ice.

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.

The compressed air can be used simultaneously to move the intake by means of a pneumatic arrangement back and forth. Such a method and a corresponding device are, for example, in EP 1 769 886 shown.

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").

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.

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").

While the blast media can usually be pre-produced for cleaning with pellets, when cleaning with dry ice snow, the CO2 snow is usually produced continuously as part of the overall process. This prevents the snow from clumping together. Such a method and a corresponding device are for example out EP 1 843 874 known.

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.

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.

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.

In addition, the dry ice snow container can be vibrated, such as in US 3670516 revealed or promoted Dry ice is used, such as in US 3786644 exposed to an electric field, so that discharge of electrostatically charged dry ice particles.

In the prior art, 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.

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.

A first aspect of the invention relates to an insert plate for a device for dispensing dry ice. The plate is characterized in that it is 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.

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.

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.

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.

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 used in such a device prevents namely by the sieving effect the plate that clumps in place of dry ice pellets filled dry ice snow in the extraction process. At the same time, the loosened snow is conveyed through the passage openings due to the shaking movement.

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 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.

The invention further relates to a device for delivering dry ice snow as conveyed with a reservoir for receiving dry ice snow and a vibrating and / or Abstreifmittel.

The device is characterized in that an insertion plate with passage openings, in particular as described above, is provided. The plate is located in the interior of the storage container and divides the storage container into two areas, wherein the first area contains the, in particular unsliced and more compact, dry ice snow and in the second area the snow which is conveyed through the plate, in particular loosened. The reservoir is suitable for receiving example previously produced dry ice tea or previously produced dry ice pellets.

It is also possible that the insert plate is permanently in the reservoir, so it can not be removed, as well as that it is an insertable and removable plate.

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.

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.

In a firmly mounted in an inner container insertion plate, the shaking of the plate can be done by a shaking of the inner container.

In a preferred embodiment of the invention, the reservoir is made of thermally insulating material, whereby the melting or sublimation 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.

In a preferred embodiment of the device described above, 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. For this purpose, the device has for example roles or is transportable on a cart.

A further solution of the above-mentioned object consists in a device for dispensing optionally either dry ice snow or dry ice pellets as conveyed with a reservoir for receiving the conveyed material, at least one selection element and a shaking and / or coating agent. It is characterized in that a first mode of promotion of dry ice snow and a second mode of promotion of dry ice pellets by means of the selection element is selectable.

The at least one selection element may be an insert plate with passage openings, in particular as described above.

In a preferred embodiment of a device with insertion plate as described above, the shaking means is a direct or indirect impact device on the plate.

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.

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.

An externally mounted vibration means could be a shock device, which in particular acts with periodic poking on the reservoir.

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 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.

For this purpose, the container may be provided with a delivery line, in particular a flexible tube, which is connected at one end to the container and 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 promoted snow or dry ice pellets and can be delivered by 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.

As an alternative to the insertion plate, the at least one selection element for fixing pellets as conveyed material can be a mixing element located in particular completely inside the reservoir, which can preferably be moved 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.

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 a further advantageous embodiment, the mixing element is connected to an inner container.

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.

The same applies to the filling and removal of dry ice snow when the insert plate is connected to an inner container.

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.

The device can also be equipped with two parallel storage containers, one of which is equipped to receive and convey pellets and one for receiving and conveying dry ice snow. For example, a mixing element is arranged in one container and an insert plate is arranged in the other container. Optionally, the device serves to convey pellets or dry ice snow.

In a further preferred embodiment of the device, the device is provided with a suction device. For example, dry ice snow may be blasted onto a surface, eg the interior of a vehicle, while at the same time the sublimated CO2 gas and the dirt particles dissolved by blasting be sucked off. 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.

In the process according to the invention for the delivery of dry ice snow, dry ice snow, which is located in a storage container, is conveyed by means of an insert plate with passage openings, in particular according to the above description, swept over by a shaking agent or swept over by a coating agent. The thus-conveyed snow could be discharged, for example, by means of a negative pressure generating compressed air arrangement as described above.

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.

The choice of the type of delivery consists, for example, in the choice of dry ice pellets as conveyed use a mixing element or 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.

For the delivery, a compressed air arrangement is preferably used, for which purpose in particular a negative pressure in the storage container is generated.

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.

A solution according to the invention also exists in a method for cleaning with dry ice snow according to claim 22, wherein a surface is irradiated with dry ice snow, in particular by means of a device as described above. At the same time, dissolving dirt particles and sublimated gas are sucked out by means of a suction device.

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.

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 3

eine schematische Darstellung eines Vorratsbehälters einer erfindungsgemässen Vorrichtung mit einer Einsetzplatte mit Durchlassöffnungen;

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).

The invention is explained in more detail below in exemplary embodiments and with reference to the drawings. Show it:

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. 3

a schematic representation of a reservoir of an inventive device with an insert plate with passage openings;

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).

In 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. This is how the dry ice T comes along high speed on a surface to be cleaned ("blasting").

The 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 Rüttelmittel 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. As a result, less moisture is deposited on the interior of the container 10 and on the dry ice. 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.

At the in FIG. 3 illustrated variant is located in the reservoir 10 as a selection element 124 an insertion plate 105 with passage openings 106. The insert plate 105 is provided with a Aufschlagkörper 107. In this case, 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 impact of the intake manifold 11 on the Impact body 107, the insert plate 105 is vibrated. Dry ice snow on the plate 105 is thereby not shown explicitly in the figure

Passage openings 106 sieved and sucked through the intake manifold 11. The impact body may additionally have a mandrel, not explicitly shown in the figure, extending into the intake manifold.

FIG. 4 shows a reservoir of an inventive device, wherein as a selection element 134 is connected to an inner container 109 Aufmischelement 15 for conveying dry ice pellets is provided. When exchanging the selection element 134, the remaining pellets remaining in the inner container 109 are simultaneously removed from the device.

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 144, the remaining snow remaining in the inner container 109 is simultaneously 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 shaking means 102 in this case comprises 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. On the plate 105 located dry ice snow is thereby screened by the passage openings 106 not explicitly shown in the figure and sucked through the intake manifold 11.

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.

To promote dry ice snow, 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 insert plate 105 is preferably a square mesh of stainless steel with a mesh of 3 mm.

If 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.

Instead of 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.

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).

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. In particular, 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 strikes the insertion plate 105 when falling back and the resulting jolt causes dry ice lying on the plate 105 to fall through the passage openings 106. 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 thus-promoted dry ice is sucked through the intake manifold 11.

At the in FIG. 7 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. By the impact of the hammer 114 on the plate 105, the insert plate 105 is vibrated. Dry ice on the plate is thereby sifted through the plate 105 and sucked through an intake 11. Depending on the type and size of the Druchlassöffnungen and depending on Rüttelfrequnez either dry ice snow or dry ice pellets can be promoted in this way.

At the in FIG. 8 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 selector 174 is an insertion plate 105 having ports 106. The connecting rod is directly coupled to the insert plate 105, so that the insert plate 105 is vibrated upon movement of the rod. Dry ice snow on the plate is thereby sifted through the plate 105 and sucked through an intake 11.

At the in FIG. 9 illustrated variant is located inside the reservoir 10 as a selection element 184 a relative to the container 10 movable inner container 109. 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 Rüttelmittel 102 includes a pneumatic cylinder 14 and is connected to a from above the inner container 109, in particular on the conical part 110, acting shock device, in the present example with a hammer 114, respectively. The hammer 114 is moved up and down by the pneumatic cylinder 14 along the longitudinal axis L. As a result of the impact of the hammer 114 on the inner container 109, this is shaken and dry ice located in the inner container 109 is conveyed through an outlet 116 in the conical part 110. The thus-promoted dry ice is sucked through an intake 11.

At the in FIG. 10 in the reservoir shown as a selection element 194, preferably sprung mounted, insert plate 105 with passage openings 106. 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 an insertion plate 105 with passage openings 106 and strips off this insertion plate 105. In the reservoir 10 befindliches dry ice is conveyed by the scraping tool 113 through the insert plate 105 and sucked through an intake manifold 11.

In FIG. 11 Different variants of passage openings are shown. Figure a) shows a square mesh fabric in which the spaces between a lattice-like structure form mesh passage openings 106a. Preferably, the square mesh has an open screen area of 50-70%. For example, 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.

In Figure b) form square, rectangular, oval or honeycomb-shaped recesses in a plate passage openings 106b1, 106b2, 106b3, 106b4.

In Figure c), 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. In this case, the dry ice snow is blasted by means of the device 1 on the surface, such as a vehicle. At the same time sublimated gas and dissolved dirt particles are sucked by means of the suction device 115.

In arrangement variant a) 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.

In arrangement variant b) 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.

Claims (19)

An insert plate (105) for a device (1) for dispensing dry ice, characterized in that it is provided with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d), in particular one, preferably not the one Inserting plate (105) connected, support element (108) is provided and / or with an inner container (109) is connected. Insertion plate (105) according to claim 1, characterized in that the insertion plate (105) comprises a sieve or grid. Device (1) for delivering dry ice snow as conveyed with - A reservoir (10) for receiving dry ice and - A shaking means (102) and / or coating means (103), characterized in that - An insert plate (105) with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d), in particular according to claim 1 or 2, which is located inside the reservoir (10), the reservoir ( 10) is subdivided into two regions and can be vibrated by means of the vibrating means (102) and / or can be stripped off by means of the coating means (103). Device (1), in particular according to claim 3, for delivery of either dry ice snow or dry ice pellets as conveyed with - A reservoir (10) for receiving the conveyed, - at least one selection element (104; 124; 134; 144; 154; 164; 174; 184; 194) and a shaking means (102) and / or coating means (103) characterized in that on the one hand, the type of extraction for dry ice snow and, on the other hand, the mode of conveying dry ice pellets can be selected by means of the selection element (104; 124; 134; 144; 154; 164; 174; 184; 194). Apparatus according to claim 4, characterized in that the at least one selection element (104; 124; 134; 144; 154; 164; 174; 184; 194) has an insertion plate (105) with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d), in particular according to claim 1 or 2. Device according to one of claims 3 to 5, characterized in that the Rüttelmittel (102) is a, in particular on the plate (105) acting, shock device (114). Device according to at least one of claims 4 to 6, characterized in that the storage container (10) by means of the Rüttelmittels (102) is vibrated, which is preferably from outside the reservoir (10) on the reservoir (10) acting thrust device (114) , Device according to at least one of claims 3 to 7, characterized in that shaking means (102) causes a vibration frequency of 1-10 Hz and / or a vibration amplitude of 1-20 mm. Device according to at least one of claims 3 to 8, characterized in that the storage container (10) with a compressed air device (101) is connectable, by means of which the conveyed material can be discharged. Device according to at least one of claims 4 to 9, characterized in that at least one selection element (104) is a mixing element (15), which is in particular connected to an intake manifold (11) and / or an inner container, which in particular parallel to an axis ( L), in particular within the storage container (10), is movable back and forth. Device according to at least one of claims 4 to 10, characterized by a suction device (115), by means of which sublimated CO2 gas and particles are sucked. A method of dispensing dry ice snow containing the step Conveying dry ice snow in a storage container (10) by means of an insertion plate (105) shaken by a shaking means (102) and / or stripped by a coating means (103) with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c, 106d), in particular according to claim 1 or 2. A method of dispensing either dry ice snow or dry ice pellets containing the steps Selection of either dry ice snow or dry ice pellets as conveyed material, - Specification of a type of delivery according to the selection of the conveyed goods. A method according to claim 13, characterized in that the setting of the conveying mode is the insertion of a selection element (104; 124; 134; 144; 154; 164; 174; 184; 194), in particular into a storage container (10) of a Device for dispensing dry ice. A method according to claim 13 or 14, characterized in that it is either the shaking of a mixing element (15) or the shaking of an insert plate (105) with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c 106d), in particular according to claim 1 or 2, by means of a shaking means (102) and / or the stripping off of an insert plate (105), in particular according to claim 1 or 2, by means of a coating agent (103). A method according to claim 12 or 15, characterized in that the amount delivered per time by means of adjusting the Rüttel- and / or Abstreiffrequenz, the Rüttelamplitude and the choice of the size of the passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d). A method according to any one of claims 12 to 16, that the dry ice snow is discharged by means of a compressed air air arrangement (101), in particular by means of the generation of a negative pressure happens. Use of an insert plate (105) with passage openings (106; 106a; 106b1, 106b2, 106b3, 106b4; 106c; 106d) for conveying dry ice snow in a device (1) for cleaning with dry ice. Method for cleaning with dry ice snow comprising the steps: - Irradiating a surface with dry ice snow, in particular by means of a device according to at least one of claims 3 to 12; - Suction of particles and gas by means of a suction device (115).

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