WO2024026523A2

WO2024026523A2 - Device for chilling or frosting glasses

Info

Publication number: WO2024026523A2
Application number: PCT/AT2023/060261
Authority: WO
Inventors: Michael REUSSNER
Original assignee: Reussner Michael
Priority date: 2022-08-03
Filing date: 2023-08-03
Publication date: 2024-02-08
Also published as: WO2024026523A3

Abstract

The invention relates to a device for chilling or frosting glasses using carbon dioxide, the device having an interior, which is open at the top, for receiving a glass, the interior being surrounded all around by an inner wall (2), a nozzle (6) and a funnel-shaped support element (5) being arranged in the interior, and a glass to be chilled or frosted being able to be moved from above into the interior and against the support element (5). The invention also relates to accessories for said device.

Description

Device for cooling or freezing glasses

The invention relates to a device for cooling or freezing glasses using carbon dioxide (CO2) and its accessories.

According to the state of the art, devices for cooling or freezing glasses are known in many design variants. The generic design of the present invention resembles a glass shower. In this design, a glass is placed over a nozzle, which is surrounded by a perforated support plate or a support grid for the glass. As soon as the glass is placed over the nozzle, a suitable actuation (push button, or by pressing the glass against the support) opens the gas flow to the nozzle and CO2 is released into the glass and subsequently also around the glass.

From EP 1568956 A1, for example, a device for cooling or freezing glasses is known, which does not correspond to this type, since it has an annular nozzle which is located outside the glass. The arrangement of the ring nozzle around the glass requires a different structure of the device compared to devices of the above design.

WO 2016084108 A1 shows a device of the above type. The nozzle is surrounded by a support plate. As soon as a glass is pressed against the support plate (shown in a flower shape), CO2 flows from the nozzle into the interior of the glass. Due to the openings in the support plate, the CO2 from the inside of the glass passes down through these openings and rises again between the closed inner wall of the device and the glass.

US 3668888 A and US 3602008 A show similar devices which work in the same way. The device of US 3602008 A is permanently installed in a housing which laterally surrounds a gas bottle.

W02022020873A2 shows a device for cooling or freezing glasses, in which the nozzle is offset downwards in an interior of the device, with a collecting container for dry ice snow accumulating at the nozzle underneath a support plate.

The object underlying the invention is to further improve or expand a device for cooling glasses of the type disclosed in WO2022020873A2 and its usability.

To solve the problem, devices and accessories for these devices are proposed in accordance with the attached claims.

In one embodiment variant, a device for cooling or freezing glasses with carbon dioxide is proposed, which has an interior space that is open at the top to accommodate a glass, the interior space being surrounded all around by an inner wall, a nozzle and a support element being arranged in the interior space and a Glass to be cooled or frosted can be moved from above into the interior and against the support element, with the inner wall below the Support element is open into the interior of the device and a container, preferably as a drawer, is arranged underneath the interior of the device, with dry ice formed on the nozzle falling into the container through openings in the support or through openings between the support and the nozzle, the support element being funnel-shaped and also the area of the inner wall below the support element is funnel-shaped and extends below the support element.

The inner wall is preferably part of a foam part, in particular a rigid foam part.

Alternatively, the inner wall can be formed by an additional element which is present within the foam part and has openings towards the foam part.

The openings into the interior of the device ensure that carbon dioxide escaping from the nozzle, which may include a portion of carbon dioxide snow, and the sound resulting from the exit is diverted into the interior of the device, so that less carbon dioxide snow and less sound penetrate to the outside. This advantageously reduces the emissions (in the form of carbon dioxide snow and sound) from the device compared to the prior art.

It was found that a hollow truncated cone-shaped or funnel-shaped support is advantageous because a better fit of the glass edge on the support can be achieved. This measure means that less carbon dioxide snow and less sound are released to the outside. Thanks to the improved fit of the glass edge on the support, carbon dioxide snow and sound are better directed downwards through the openings in the support.

In the embodiment variant in which the inner wall below the support plate is open into the interior of the device or is closed with an inner base element which has several openings which lead into the interior of the device, it is preferred that a container is arranged below the support plate in the interior of the device, whereby on the Dry ice produced by the nozzle falls down into the container through openings in the support plate or through openings between the support plate and the nozzle. The container is preferably accessible or removable through an opening on the side of the outer wall.

Instead of a support plate with openings or a support grid as is known in devices of this type, a support element without openings in the area of the wall of the glass is preferably used. The support element preferably has a central opening for the passage of the nozzle. The support element preferably has a plurality of openings around the central opening for the passage of the nozzle, which are located within the wall of a usable glass. These multiple openings are preferably located entirely within half the radius of the support element.

In a preferred embodiment variant, it is proposed that the support plate has a funnel-shaped support area for a glass and that dry ice formed at the nozzle passes down into the interior of the device through openings which are present between the funnel-shaped support area of the support plate and the nozzle. It is preferred that a removable drawer is arranged below the support plate, with dry ice formed at the nozzle falling down into the drawer through openings in the support plate. The drawer is also useful if foreign objects or liquids get into the device.

The distance between the upper edge of the interior and the upper edge of the support element is preferably at least 2, particularly preferably at least 4 cm, in particular at least 6 cm.

In one embodiment variant, there is a cavity between the inner wall and the outer wall.

In one embodiment variant, there is a sound-absorbing material in this cavity.

A preferred variant provides that the support element is made of elastic material, in particular silicone, or has a surface or support made of elastic material, in particular silicone.

A preferred variant provides that the device has a sensor which detects the pressing of a glass onto the support plate, or has a switch or a button which is actuated when a glass is pressed onto the support plate, the device having a valve for the release of carbon dioxide via the nozzle, which is opened due to a signal from the sensor or due to the actuation of the switch or button.

In the device in question, the nozzle and the support plate are placed inside the device. The upper edge of the container wall is preferably at a distance of at least 3 cm from the nozzle, in particular at least 7 cm.

The interior of the device is preferably cylindrical.

The interior preferably offers space for exactly one glass.

The interior preferably has an inner diameter in the range of 10 to 20 cm, particularly preferably in the range of 13 to 17 cm.

The inner wall surrounds the support element on all sides or all around.

In one embodiment variant, it can be provided that when a glass is pressed against the support plate, a valve for the CO2 is opened for a period of time that is independent of the period of time when the glass is pressed. For this purpose, an electronic circuit can be provided which opens a nozzle when the glass is initially pressed and the valve is closed again after a predetermined or adjustable time.

The device is preferably operated by pressing a glass against the support plate. The CO2 can be released by a mechanism that is activated by pressing down. The release can be done by a magnetic switch or another electrical, electronic or electromechanical component that is actuated during downward movement. The release can be triggered by a sensor which detects pressure on the support plate. The release can be triggered by a sensor which detects the downward movement of the support plate. In one embodiment variant it is provided that the container below the support plate is accessible through a closable opening in the outer wall, which is located below the support plate on the outer wall of the housing. To close the closable opening, there can be a flap or a door with a hinge on the outer wall, or there can be a slider that can be moved along the outer wall.

In one embodiment variant it is provided that the container is present below the support plate as a drawer, which can be removed laterally from the housing of the device below the support plate.

In one embodiment variant it is provided that the device has an inner housing in which the valve and the switch are arranged, the inner housing comprising a roof and a wall, the roof having a roof projection opposite the wall and part of a container wall being completely inserted drawer underneath the eaves of the inner housing.

In one embodiment variant it is provided that the drawer has two areas that laterally surround the inner housing and the drawer can be removed from the device laterally through an opening in the outer wall and reinserted.

In one embodiment variant, the invention relates to a support element for a device for cooling or freezing glasses with carbon dioxide, which has an interior space open at the top for receiving a glass, the interior space being surrounded all around by an inner wall, with a nozzle and the support element in the interior space are arranged and a glass to be cooled or frosted can be moved from above into the interior and against the support element, the support element being funnel-shaped, the support element comprising a support element which comprises a funnel-shaped inclined outer ring, which has rods or other discrete connecting elements an inner ring of the carrier element is connected, the support element also comprising a funnel-shaped support, which rests on the funnel-shaped inclined outer ring and is positively attached to the carrier element in that the funnel-shaped support has a plurality of beads on its underside, which reach under the funnel-shaped inclined outer ring of the carrier element.

In one embodiment variant, the invention relates to an adapter for a device for cooling or freezing glasses with carbon dioxide, which has an interior space that is open at the top to accommodate a glass, the interior space being surrounded all around by an inner wall, with a nozzle and a support element in the interior space are arranged and a glass to be cooled or frosted can be moved from above into the interior and against the support element, the support element being funnel-shaped, the adapter having a lower conical region which can be placed on the funnel-shaped support element, the adapter having a has an upper surface against which the glass to be cooled or frosted can be moved from above and the adapter comprises a passage opening which is centrally located in the conical area at the lower end is located and extends to the lower surface of the adapter, with the nozzle being located below and/or in the through opening when the adapter is attached.

In one embodiment variant, the invention relates to a three-part press, in particular for dry ice snow, comprising three separately present elements in the form of two shaped elements and a guide element, the guide element having at least one through opening and each of the two shaped elements having at least one projection, in each of the projections there is at least one recess, with each projection finding space in a through opening of the guide element, with corresponding projections of the two shaped elements being able to be placed into a through opening from different sides.

In the three-part press, it is preferred that the guide element has a plurality of through openings and each of the two mold elements has a base body with a plurality of projections, with at least one recess in each of the projections, with each projection finding space in a through opening of the guide element, with corresponding projections two shaped elements can be placed in a passage opening from different sides.

In one embodiment variant, the invention relates to a method for producing dry ice pellets using a device for cooling or freezing glasses with carbon dioxide and a press, dry ice snow being formed at a nozzle of the device when cooling or freezing a glass, the dry ice snow being formed by at least one Opening enters the housing interior of the device and is collected there in a container, comprising the steps:

Use the device until dry ice snow has collected in the container;

Removing the dry ice snow from the container;

Pressing the dry ice snow into at least one dry ice pellet, preferably using a press designed according to one of the previous paragraphs.

An independent variant of the invention relates to an improved nozzle for a device for cooling or freezing glasses with CO2. This can be used in the device described here as preferred, or independently of this in another device for cooling or freezing glasses, i.e. also a device already known from the prior art. The nozzle is characterized by the fact that it has a porous insert through which the gas stream passes. The insert preferably comprises a packing of grains or beads, in the sense of a spherical packing. The grains or beads preferably stick to one another. The insert is preferably a sintered insert made of metal. The insert is preferably loose in the interior of the nozzle and can be secured by a ring inserted or screwed into the nozzle. In another embodiment variant, the insert can be glued in, soldered in or welded in. As shown, the nozzle preferably has a non-porous outer body which is provided with holes, in particular bores, which lead to the porous body present inside the nozzle. The gas accumulates on the side of the porous body facing away from the holes. The advantage of the nozzle is that it is quieter. In addition, the amount of dry ice snow produced can be increased.

Preferred variants of the invention are illustrated by way of example using drawings:

Fig. 1: schematically illustrates a first embodiment variant in a sectional view.

Fig. 2: schematically illustrates a second embodiment variant in a sectional view.

Fig. 3: schematically illustrates a preferred support element in a view from below and in a sectional view.

Fig. 4: schematically illustrates a first embodiment variant of a support adapter.

Fig. 5: schematically illustrates a second embodiment variant of a support adapter.

Fig. 6: schematically illustrates an embodiment variant of a three-part dry ice press, viewed from above and from the side.

Fig. 7: schematically illustrates a process for obtaining and using dry ice pellets.

The scope of protection is defined by the claims. In the description of the figures, possible embodiments and preferred features are discussed solely on the basis of the figures, the invention being in no way limited to the embodiments discussed. The person skilled in the art is in particular able to combine the teaching of the general part listed above with the description of the figures or the descriptions of the figures for the individual figures.

1 shows an exemplary device for cooling or freezing glasses with CO2 of a first embodiment variant. The device essentially corresponds to the device disclosed in WÖ2022020873A2, whereby the device shown in Fig. 1 differs from the device in W02022020873A2 in the structure of the inner wall.

The device includes an outer wall 1 and an inner wall 2. The inner wall 2 surrounds the interior of the device, which can accommodate exactly one glass to be cooled. The inner wall 2 is formed by a body 3, which can be made entirely of sound-absorbing material. There can be a cavity between the body 3 and the outer wall 1, or, as shown, the body 3 can rest against the outer wall 1.

The inner wall 2 is open at the bottom. A container 13 that can be removed from the device or a container 13 that can be accessed or emptied from the outside is arranged below the open end.

There is a support element 5 and a nozzle 6 in the interior. The nozzle 6 is preferably located centrally on the support element 5 and above it. The lower outer circumference of the nozzle 6, which faces the support element 5, can be larger than the outer circumference of the opening of the support element 5. The nozzle 6 and the support element 5 are present on a component or an assembly 7. The component or assembly 7 runs downwards into an inner housing 14 of the device. The inner housing 14 protects mechanical and electronic components of the device and ensures that Dry ice snow enters the container 13. As illustrated, the support element 5 preferably has a funnel-shaped support surface. Between the support surface and the nozzle 6 there are openings through which carbon dioxide in the gaseous state and in the solid state as dry ice snow enters the interior of the housing and thus into the container 13. The dry ice snow is thus advantageously collected inside the housing of the device.

1 is designed as a free-standing device, with the outer wall 1 being formed by an outer housing element, which is provided at the bottom by a base element 11. The container 13 is accessible from the side of the housing, preferably as a drawer that can be pulled out of the device. The drawer and the outer housing element are preferably thermally insulated. In Fig. 1 a supply line 8 for gaseous carbon dioxide and a power cable 9 are shown.

The device in FIG. 2 is designed as a built-in device. The device is preferably integrated flush into a plate, in particular a worktop of a piece of furniture, a bar or a larger device such as a gastro cooler. The structure of the interior of the device can be designed as described in FIG. 1. This means that the inner wall 2 can be formed by a body 3, the body 3 having a funnel-shaped area below the funnel-shaped support element 5. The device may have a flange 48 which may be inserted into a recess in the plate. The device may have an outer housing which is located below the plate. The device has a container 13, which is accessible below the plate, preferably by being removable from the side of the device, in particular from the outer housing.

In particular, in the cylindrical region of the body 3, a cylindrical inner housing part could be inserted, which covers the body 3 inwards towards the interior, so that at least part of the inner wall 2 is formed by the inner housing part. The inner housing part can have openings 4 which extend towards the body 3, as illustrated by way of example in FIG. In another embodiment variant, the inner housing part can also form the conical area of the inner wall 2.

A relay 15 is shown schematically in FIGS. 1 and 2, which interrupts the flow of carbon dioxide after a definable period of time. The relay 15 can be a time relay or can be controlled via a microcontroller. After a certain period of time, for example after 3-6 seconds, the relay 15 preferably de-energizes a valve in the carbon dioxide line, whereupon it closes. The relay 15 and/or the microcontroller may be present within the inner housing 14 or in a space between the inner housing 14 and the container 13.

3 shows a preferred variant of the support element 5, which comprises a support element 16 and a support 17. For better visibility, the two elements in the top view of the figure are provided with different dot patterns. The carrier element 16 is preferably connected via rods 18 to a central ring 19, which is present below the nozzle 6 on the component 7. The nozzle 6 can preferably be screwed on, with the screwed-on nozzle 6 holding the ring 19 on the component 7 attached. The carrier element 16 has a funnel-shaped inclined outer ring 20, which is connected to the inner ring 19 by the rods 18.

The funnel-shaped support 17 is preferably attached to the carrier element 16 in a form-fitting manner. As shown, the funnel-shaped support 17 preferably has a plurality of beads 21 on its underside, which engage under the funnel-shaped inclined outer ring 20 of the carrier element 16. There is preferably at least one bead 21 between two rods 18. The support 17 consists of elastic material, in particular rubber or silicone. The carrier element 16 consists of rigid material, for example hard plastic or metal.

Dry ice snow can be moved down the funnel-shaped support 17, where it gets down between the bars 18 and the component 7 and into the container 13. Gaseous carbon dioxide is drained into the interior of the housing in the same way and at least partially reaches upwards and outwards in the area between the funnel-shaped support and the funnel-shaped section of the inner wall.

4 and 5 illustrate the use of the device using support adapters 22. A support adapter 22 is required if there is no space for a container to be cooled or frosted in the interior or is too small to be placed over the nozzle 6.

4 shows an exemplary adapter for large containers and/or containers, in particular glasses, with a handle or handle. 5 shows an exemplary adapter for very small containers, especially glasses.

In both cases, the adapter 22 has a lower conical area 23, which finds space in the funnel of the support element 5. Centrally, the adapter 22 has an opening which runs from its lower end to its upper end, with the nozzle being accommodated in the opening or under the opening. The opening can be cylindrical or conical. The opening can widen or narrow upwards.

The outer wall of the adapter 22 above the lower conical region 23 can be cylindrical or conical. The outer wall can widen or narrow upwards. The adapter has an upper annular surface 24. This surface 24 can be horizontal or conical. This surface 24 can be inclined in a funnel shape inwards, or can be inclined in a conical shape outwards.

The outer circumference of the adapter 22 is preferably provided with ribs in the lower region. There are indentations 36 between the ribs. The indentations 36 start from the lower conical area and end below and at a distance from the upper annular surface 24. In the case of the adapters 22 shown in FIGS. 4 and 5, the section runs through an indentation 36 on the left and through a rib on the right.

As shown in Fig. 4, the adapter 22, in particular the adapter 22 for large containers, can have at least one handle 37 which protrudes upwards over the upper annular surface 24 or protrudes from it. The handle 37 is preferably formed by a material tongue which is monolithic with the adapter 22. Two handles 37 are preferably present.

4 and 5 show the container 13 fallen with dry ice snow 25. This occurs as a by-product when cooling the containers, especially the glasses. The accumulation and collection of the dry ice snow is particularly advantageous when used in bars, as some cocktails are served with dry ice pellets, which dry ice pellets are enclosed in stirrers known in the art. Instead of always having to have dry ice pellets on hand, the dry ice snow 25 can simply be made on site with this device. However, for the use described, it is advantageous if the dry ice is in pellet form.

Fig. 6 shows a press 26 developed for the device in question. Fig. 7 shows a preferred use of the dry ice snow 25 using the press 26. Press molds are known from the food sector in the form of one-piece mats with several depressions in which the mass to be formed is pressed into the recesses and then removed from them. In addition, two-part pressing devices are also known, in which a mass to be pressed is introduced between two half-shells.

The press 26 in question differs from known press molds (e.g. silicone molds) in that it is constructed in three parts.

The press 26 in question comprises two mold elements 27, 29 and a guide element 28. The guide element 28 has at least one through-opening 30, preferably a plurality of through-openings 30. Each of the two mold elements 27, 29 has at least one projection 31, preferably a plurality of projections 31. In Each of the projections 31 has at least one depression 32. A dry ice pellet gets its shape from two corresponding recesses 32 of the first shaped element 27 and the second shaped element 29. Each projection 31 finds space in a through opening 30 of the guide element 28.

Each shaped element 27, 29 preferably comprises a plate-shaped or bowl-shaped base body 33 from which several discrete projections 31 protrude. The projections 31 correspond to several through openings 30 of the guide element 28, so that the two shaped elements 27, 29 can be inserted into the guide element 28 with their projections 31 from different sides. The length of the through openings 30 is longer than the length of the projections 31 of a shaped element 27, 29. The length of the through openings 30 can be approximately twice the length of the projections 31. If the length is less than or equal to twice, the dry ice pellets can only be formed in the depressions 32. If the length is greater than twice, the central region of the pellet is formed in the passage opening 30 to have a central widened ridge. The use of the press 26 is illustrated in Fig. 7. Although the press 26 was developed for pressing dry ice snow and is particularly advantageous for this application because it provides good protection against contact, other uses are not excluded.

In the first step, the guide element 28 is placed on a shaped element 27 so that the projections 31 protrude into the through openings 30. In the second step, the mass to be pressed is distributed on top of the guide element 28 and spread or introduced specifically into the passage openings 30. The through openings 30 can be provided with a curve or a chamfer on one or both sides in order to facilitate the penetration of the mass and the projections 31. In the third step, the second mold element 29 is moved from above against the guide element 28, so that the projections 31 of the second mold element 29 reach the through openings 30 and the mass is pressed into pellets between corresponding projections 31. In the fourth step, the second mold element 27 and the guide element 28 are lifted off so that the pellets can be removed from the recesses 32.

A known use of a dry ice pellet is that it is placed and enclosed in a lockable cage 34 of a stirring rod 35 and is subsequently added to a drink. The stirring rod 35 shown has a hinge at its front end, by means of which one half of the cage can be pivoted towards the other, the joint axis being aligned perpendicular to the longitudinal direction of the stirring rod 35.

However, the technical steps for producing the dry ice pellets, including the generation and collection of dry ice snow in a device for cooling or freezing glasses and the pressing of this dry ice snow into pellets, are new, since previously dry ice pellets had to be purchased and stored in addition to the stirring rods 35.

Claims

Patent claims

1. Device for cooling or freezing glasses with carbon dioxide, which has an interior space open at the top to accommodate a glass, the interior space being surrounded all around by an inner wall (2), with a nozzle (6) and a support element (5) in the interior space ) are arranged and a glass to be cooled or frosted can be moved from above into the interior and against the support element (5), the support element (5) being funnel-shaped, characterized in that the inner wall (2) below the support element (5) is funnel-shaped.

2. Device according to claim 1, characterized in that the inner wall (2) is open below the funnel-shaped section into the interior of the housing and there is a container (13) below in the interior of the housing.

3. Device according to claim 1, characterized in that the inner wall (2) is part of a body (3) which is made of foamed plastic.

4. Device according to one of claims 1 to 3, characterized in that the support has a funnel-shaped support area (21) for the glass and dry ice formed on the nozzle (6) through openings which are between the funnel-shaped support area (21) of the support and The nozzle (6) reaches the interior of the device.

5. Device according to one of claims 1 to 4, characterized in that the support element (5) lies entirely below the upper opening surface of the upwardly open interior.

6. Support element (5) for a device for cooling or freezing glasses with carbon dioxide, which has an interior space open at the top to accommodate a glass, the interior space being surrounded all around by an inner wall (2), with a nozzle (6) in the interior space ) and the support element (5) are arranged and a glass to be cooled or frosted can be moved from above into the interior and against the support element (5), the support element (5) being funnel-shaped, characterized in that the support element (5) a carrier element (16), which comprises a funnel-shaped inclined outer ring (20), which is connected to an inner ring (19) of the carrier element (16) via rods (18) or other discrete connecting elements, the support element (5) also having a funnel-shaped Support (17), which rests on the funnel-shaped inclined outer ring (20) and is positively attached to the support element (16), in that the funnel-shaped support (17) has a plurality of beads (21) on its underside, which support the funnel-shaped inclined outer ring (20). of the carrier element (16).

7. Adapter (22) for a device for cooling or freezing glasses with carbon dioxide, which has an interior space open at the top to accommodate a glass, the interior space being surrounded all around by an inner wall (2), with a nozzle (6) in the interior space ) and a support element (5) are arranged and a glass to be cooled or frosted is inserted from above the interior and can be moved against the support element (5), the support element (5) being funnel-shaped, characterized in that the adapter (22) has a lower conical region (23) which can be placed on the funnel-shaped support element (5), that the adapter (22) has an upper surface (24) against which the glass to be cooled or frosted can be moved from above and that the adapter comprises a passage opening which is located centrally in the conical area (23) at the lower end and extends to the surface (24), with the nozzle (6) being located below and/or in the through opening when the adapter (22) is attached. Three-part press (26), in particular for dry ice snow, comprising three separate elements in the form of two mold elements (27, 29) and a guide element (28), characterized in that the guide element (28) has at least one through opening (30) and each of the two shaped elements (27, 29) has at least one projection (31), with at least one depression (32) being present in each of the projections (31), each projection (31) being in a through opening (30) of the guide element (28). finds, wherein corresponding projections (31) of the two shaped elements (27, 29) can be placed into a through opening (30) from different sides. Three-part press (26) according to claim 8, characterized in that the guide element (28) has a plurality of through openings (30) and each of the two mold elements (27, 29) has a base body (33) with a plurality of projections (31), in each the projections (31) have at least one recess (32), each projection (31) finding space in a through opening (30) of the guide element (28), corresponding projections (31) of the two shaped elements (27, 29) coming from different sides can be placed in a passage opening (30). Method for producing dry ice pellets using a device for cooling or freezing glasses with carbon dioxide and a press, dry ice snow being formed at a nozzle (6) of the device when cooling or freezing a glass, the dry ice snow passing through at least one opening into the interior of the housing of the device and is collected there in a container (13), characterized by the steps:

Use the device until dry ice snow has collected in the container (13);

Removing the dry ice snow from the container (13);

Pressing the dry ice snow into at least one dry ice pellet, preferably using a press according to claim 9. Nozzle for a device for cooling or freezing glasses with carbon dioxide, characterized in that it has a porous insert. Nozzle according to claim 11, characterized in that the porous insert comprises a packing of grains or beads or is in the form of a sintered metal insert. Nozzle according to claim 11 or 12, characterized in that the porous insert is present loosely in an interior of the nozzle and is preferably secured by a ring inserted or screwed into the inside of the nozzle or is glued in, soldered in or welded in. Nozzle according to one of claims 11 to 13, characterized in that the nozzle has a non-porous outer body which is provided with holes, in particular bores, which lead to the porous insert present inside the nozzle.