Field of the Invention
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The invention relates to an adapter for a drinking straw and a related drinking device for the retronasal perception of an aroma substance.
Prior Art
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There is an increasing need to ingest drinking liquids which on the one hand have a pleasant taste profile but on the other hand prevent health risks which could be brought about by the ingestion of aroma substances or stabilizing agents dissolved in the drinking liquid. The intake of an increased quantity of calories is also to be avoided.
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Water which has been given a slightly fruity aroma has therefore become popular. However, even in this aromatized water there are undesired additives such as stabilisation agents and a certain proportion of sugar, which is why these aromatized beverages likewise have a quantity of calories which is rejected by many users. A first step towards solving this problem consists in only adding the flavouring aroma to the beverage just before it is consumed. An aroma substance originally provided separately is delivered to the drinking liquid and dissolved in it immediately before or during the consumption of the beverage. Although this measure allows problems such as the stabilisation of the drinking liquid to be avoided over a prolonged period of time, the problem of the undesired ingestion of additives remains.
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Since the olfactory sensation plays a significant part in gustatory perception in the consumption of food and beverages, systems to date have attempted to influence the odour perceived while drinking. To that end
US 5,635,229 proposes an aroma element which can be attached close to the drinking opening on a drinking container so that the aroma element is situated in the immediate proximity of the nose of the user who breathes through the nose while drinking and thereby takes in the aroma orthonasally.
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Drinking devices have been suggested for the retronasal perception of an aroma substance comprising a storage container for drinking liquid, at least one aroma container through which air can flow, and a transporting channel for drinking liquid running from the storage container to a mouth end of the drinking device. Further, an air channel is provided for transporting aromatized air, wherein the air channel runs from an aroma container to the transporting channel for drinking liquid or to the mouth end. Such drinking device is known from
WO 2019/016096 A1 .
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WO 2021/233516 A1 describes an aroma container and drinking device which also serves for the retronasal perception of an aroma.
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The substantial aspect of such drinking systems consists in that the aroma substance is perceived retronasally. During drinking the aroma substance reaches the mouth of the user together with the drinking liquid and subsequently rises retronasally via the pharynx to the olfactory mucosa (regio olfactoria), where it is captured by the receptors situated there and is perceived by the user. Advantage is taken of the fact that there is a close correlation between the sense of smell and the sense of taste. The user therefore gains the impression that he/she is tasting the aroma, even though it is in fact only smelled retronasally.
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A person's sense of taste is substantially determined by the retronasal sense of smell. The receptors of the tongue can only distinguish between sweet, sour, bitter, salty and umami, whereas the differentiated sense of taste arises in that the gaseous phase of food stuffs and liquids in the pharynx ascends via the retronasal route and reaches the olfactory mucosa. The sensors located there trigger neurological processes which cause the taste impression to arise in the brain. Thus, a person to whose pharynx an aroma is delivered during drinking gains the impression that the beverage is aromatized, since the retronasal smelling process creates in the brain a sensation that the beverage is the source of the aroma, even though the user is ingesting a pure and unadulterated, i.e., non-aromatized, liquid such as water.
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If the odour is perceived by breathing in through the nose, known as the orthonasal perception of an aroma substance, this impression does not arrive to the same extent since the sensation is linked to the rate of breathing and thus the user gains the correct impression that he/she is only smelling the aroma substance, but not tasting it as is the case with retronasal perception.
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EP 3 944 792 A1 describes a drinking straw to which an aroma container can be attached to establish a drinking device for retronasal perception of an aroma substance. The drinking straw is specifically adapted for such drinking device.
Summary of the Invention
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It is the object of the invention to suggest an adapter for a drinking straw which can be used with any conventional drinking straw, like that as used in existing drinking systems using a straw.
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This object is solved by an adapter for a drinking straw with the features of claim 1 and a drinking device for the retronasal perception of an aroma substance with the features of claim 12. Preferred embodiments follow from the other claims.
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The inventive adapter for a drinking straw extends in a longitudinal direction from a first end to a second end and comprises an attachment element comprising a receiving volume for receiving a drinking straw and a mouthpiece mounted to the attachment element or integrally formed with the attachment element, the mouthpiece forming a drinking opening at the second end of the adapter and means for attaching at least one aroma source, wherein the attachment element is provided with at least one air ingress opening formed in the wall surrounding the receiving volume or in the first end of the adapter. The at least one air ingress opening is in fluid communication with the aroma source and with an air guiding structure at least partially formed an air guiding structure at least partially formed as a depression in the inner wall surface of the wall surrounding the receiving volume. The air guiding structure forms at least one dispensing opening for aromatized air, and the at least one dispensing opening for aromatized air is arranged in the mouthpiece preferably in the plane of the drinking opening or in vicinity to the plane of the drinking opening.
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Since relevant functions of the inventive adapter can be included in the adapter for a drinking straw along that part in the longitudinal direction of the adapter in which the receiving volume is formed for inserting a drinking straw, the adapter can be used with any conventional drinking straw of normal dimensions. In case that a drinking straw with a smaller outer diameter than usual should be used, a cylindrical adjustment element with the required outer diameter for the attachment element and an inner diameter corresponding to the outer diameter of the drinking straw used could be used, which adjustment element can be mounted onto the outer wall surface of the straw before fixing the straw in the receiving volume of the adapter.
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The advantageous provision of an air guiding structure running from the air ingress opening to the dispensing opening arranged in the mouthpiece makes it possible to reduce the risk of drinking liquid entering the air guiding structure to enter the replaceable aroma container because drinking liquid entering the dispensing opening for aromatized air has to travel a relatively long way up to the air ingress opening. However, it is also possible to position the dispensing opening such that aromatized air enters the drinking liquid at some distance to the drinking opening.
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The air guiding structure is formed in the inner wall surface of the wall surrounding the receiving volume. This makes it possible to use the adapter with any conventional drinking straw. However, it is also possible to provide the depression in the surrounding wall of a drinking straw, or depressions in both the surrounding wall of a drinking straw and the inner wall surface of the wall surrounding the receiving volume. A design with depressions in both the surrounding wall of a drinking straw and the inner wall surface of the wall surrounding the receiving volume can be used to generate a tortuous path for the air travelling along the air guiding structure.
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In this context it is advantageous if, according to a preferred embodiment, the at least one air ingress opening is formed close to the first end of the adapter. Such positioning of the air ingress opening further contributes to avoid an undesired ingress of water into the replaceable aroma container because the length of the air guiding structure is increased.
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The further advantage of the inventive adapter lies in the fact that the air guiding structure is at least partially and preferably fully formed as a depression in the inner wall surface of the wall surrounding the receiving volume.
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Therefore, the adapter as such does not have a closed air guiding structure, i.e., an air guiding structure fully surrounded by a wall. Only after the insertion of a drinking straw, an air channel is formed between the depression in the inner wall surface of the wall surrounding the receiving volume and the outer wall surface of a drinking straw. Such an air guiding structure formed as a depression is easier to manufacture and makes it possible to provide complex shapes of the air guiding structure.
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The adapter can be easily attached to a drinking straw. Further, at least one aroma source can be attached to the adapter.
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The provision of a plurality of dispensing openings for aromatized air divides the overall flow of aromatized air into a plurality of partial streams which are less noticeable for a user when drinking.
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Preferably, the at least one aroma source comprises a replaceable aroma container, and the means for attaching is preferably configured to serve for positioning the replaceable aroma container.
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In operation, when a user sucks in liquid through the mouthpiece of the adapter, drinking liquid is conveyed through the drinking straw and released through the drinking opening at the second end of the adapter. At the same time, the sub-pressure generated by a user when sucking in liquid through the drinking opening leads to the transport of aromatized air. The sub-pressure at the drinking opening of the drinking liquid leads to a sub-pressure within the air guiding structure and air ingress opening which is in fluid communication with an air outlet opening of the replaceable aroma container. A pressure difference between the outside atmosphere and the interior of the replaceable aroma container generates an air flow into the replaceable aroma container through its air inlet opening. The air becomes enriched with aroma substance and leaves the replaceable aroma container through an air outlet opening in fluid communication with the air ingress opening of the adapter. The aromatized air flows through the air guiding structure to the dispensing opening for aromatized air which is arranged in the mouthpiece in the plane of the drinking opening or in vicinity to the plane of the drinking opening. In such a way, a user will suck in drinking liquid and, at the same time, aromatized air. The aromatized air is either sucked in by the user separately from the drinking liquid, or a certain degree of mixing between the drinking liquid and the aromatized air takes place so that the drinking liquid with small bubbles of aromatized air dispersed therein will enter the oral cavity of a user. The adapter provided with a replaceable aroma container can be used on any drinking straw in order to either add a certain taste to water or to enhance a favouring already included in a certain drinking liquid.
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According to a preferred embodiment, the air guiding structure comprises at least one concave pressure equalization chamber formed in the inner wall surface of the wall surrounding the receiving volume. Preferably, the air guiding structure comprises a plurality of pressure equalization chambers interconnected by air guiding sections formed as a groove in the inner wall surface of the wall surrounding the receiving volume.
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In a pressure equalization chamber, the cross-sectional area available for the flow of aromatized air increases so that the air velocity drops. Therefore, the aromatized air flowing through a pressure equalization chamber has a higher residence time so that a thorough mixing of the aromatized air occurs resulting in a more constant degree of flavouring. A pressure equalization chamber can be shaped such that a mixing of the aromatized air is promoted, for example by providing a geometry which promotes the forming of a vortex of the aromatized air flowing within the pressure equalization chamber.
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The main function of the pressure equalization chamber, however, is to provide a buffering volume reducing the pressure peaks generated when a user sucks in liquid through the mouthpiece.
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The provision of a plurality of pressure equalization chambers interconnected by air guiding sections formed as a groove in the inner wall surface of the wall surrounding the receiving volume further improves the mixing of the aromatized air resulting in a more constant degree of flavouring of the aromatized air. Further, the provision of a plurality of pressure equalization chambers with a larger cross-sectional area interconnected by narrow connecting sections formed as a groove further reduces the risk of an undesirable entering of drinking liquid into the replaceable aroma container.
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According to a preferred embodiment, in a longitudinal extension of the adapter, at least one concave pressure equalization chamber extends further towards the first end of the adapter than the position of the air ingress opening.
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Such geometry further contributes to the trapping of liquid entering the air guiding structure at the dispensing opening. If the adapter is attached to a drinking straw essentially standing in an upright position with the mouthpiece forming the uppermost portion of the adapter, liquid entering the air guiding structure and eventually entering the pressure equalization chamber might become trapped at the lowest position of the pressure equalization chamber which is lower than the position of the air ingress opening. In such a way, an undesirable entering of drinking liquid into the replaceable aroma container can be more effectively prevented.
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Preferably, the air ingress opening extends between an outer wall surface and the inner wall surface of the wall surrounding the receiving volume and is formed in a concave pressure equalization chamber. In other words, it is preferred that the air ingress opening opens into a pressure equalization chamber.
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Such measure further reduces the risk of drinking liquid entering the replaceable aroma container because, different to a tubular geometry, drinking liquid entering a pressure equalization chamber does not necessarily travel to the air ingress opening leading to the air outlet opening of the replaceable aroma container.
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According to a preferred embodiment, the air guiding structure is provided with means for directing water away from the air ingress opening, the means for directing water away from the air ingress opening preferably being a protrusion in the wall surrounding the receiving volume, which protrusion is positioned adjacent to the air ingress opening. Such protrusion can surround the air ingress opening so that water creeping along the wall surrounding the air ingress opening will be directed around the air ingress opening and away from it. As an alternative, a protrusion can be provided which is positioned adjacent to the air ingress opening at a position between the air ingress opening and the dispensing opening which, when the adapter is attached to a drinking straw and the mouth end forms the vertically uppermost part of the adapter, is in a position vertically above the air ingress opening. Accordingly, drinking liquid flowing in a downwards direction is directed away from the air ingress opening.
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According to a preferred embodiment, the adapter further comprises a fixing structure for attaching a drinking straw, the fixing structure comprising a stop means for defining the maximum longitudinal insertion of a drinking straw into the receiving volume of the adapter.
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Such fixing structure serves different purposes. Firstly, it fixes the drinking straw and prevents it from an inadvertent slipping out of the receiving volume of the adapter. Secondly, a stop means can be provided which defines the maximum longitudinal insertion of a drinking straw into the receiving volume of the adapter. With the provision of such a stop means, when attaching the adapter to a drinking straw, the adapter and drinking straw are moved relative to each other up to an abutment of the drinking straw against the stop means. This gives a clear indication to a user that the adapter and the drinking straw are in a correct mutual position. Since the air guiding structure is only formed as a depression in the inner wall surface of the wall surrounding the receiving volume, a drinking straw needs to be fully inserted into the receiving volume so that an air channel is formed between the depression in the inner wall surface of the wall surrounding receiving volume and the outer wall surface of the drinking straw. If a drinking straw does not extend up to the stop means, the drinking system might have a deteriorated function.
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Preferably, the stop means is a step element formed in the wall surrounding the receiving volume close to the second end of the adapter. Once the straw abuts against the stop means, a user receives tactile feedback that the correct positioning of the adapted relative to the drinking straw has been achieved.
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According to a preferred embodiment, the adapter further comprises at least one groove in the step element forming part of the air guiding structure.
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Such groove in the step element places the dispensing opening for aromatized air immediately above the end of the drinking straw closest to the mouthpiece. Therefore, the aromatized air is added to the drinking liquid at a position immediately before, in use, the drinking liquid leaves the drinking opening of the mouthpiece. A plurality of grooves is preferably provided in case that a plurality of dispensing openings for aromatized air is provided.
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Preferably, the means for attaching and positioning a replaceable aroma container is a ring-shaped protrusion around the wall surrounding the receiving volume. Such a structure has a series of advantages. Firstly, the provision of a ring-shaped protrusion around the wall surrounding the receiving volume is easy to manufacture. Secondly, such ring-shaped protrusion can be used with an aroma container which is essentially ring-shaped and extends around the attachment element of the adapter. A ring-shaped aroma container has a well-balanced weight distribution which is advantageous for the inventive adapter used on a drinking straw.
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Preferably, in the region in which the replaceable aroma container is attached to the adapter, the cross-sectional area defined by the outer wall surface of the wall surrounding the receiving opening deviates from a circular shape. In other words, the outer wall around which the ring-shaped aroma container is attached is noncircular. As a result of this, the replaceable aroma container with a correspondingly shaped inner sidewall can only be placed in one single angular position with respect to the rotation around the longitudinal axis of the receiving volume. Accordingly, this preferred feature promotes an exact positioning of a replaceable aroma container.
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The aroma container can have any suitable shape which makes it possible for a user to attach the aroma container in a correct orientation to the adapter.
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The cross-sectional area defined by the outer wall surface of the wall surrounding the receiving opening might also have a circular shape, and the aroma container might be provided with a surrounding groove formed in its inner side wall which establishes a fluid communication between the aromatized air leaving an air outlet opening of the aroma container and the air ingress opening.
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The inventive drinking device for the retronasal perception of an aroma substance comprises an adapter for a drinking straw as described above, a drinking straw with a surrounding wall which is frictionally held in the receiving volume of the adapter, and an aroma source, wherein the air guiding structure is formed by the depression in the inner wall surface of the wall surrounding the receiving volume and an outer wall surface of the drinking straw.
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When, according to a preferred embodiment, the aroma source is a replaceable aroma container which is properly attached to the adapter, the air ingress opening of the attachment element is in fluid communication with an air outlet of the aroma container.
Brief Description of the Drawings
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In the following drawings, the invention will be described, purely by way of example, by means of a specific embodiment. The figures show the following:
- Fig. 1
- an adapter according to the invention in a three-dimensional view and with a drinking straw inserted;
- Fig. 2
- the adapter as shown in Fig. 1 but with a replaceable aroma container attached to the adapter;
- Fig. 3
- a cross-sectional view of the adapter with attached replaceable aroma container;
- Fig. 4
- a cross-sectional top view of the adapter with attached replaceable aroma container according to Fig. 3; and
- Fig. 5
- a cross-sectional view of the adapter with attached replaceable aroma container and inserted drinking straw in a cross-sectional plane perpendicular to that according to Fig. 4.
Description of Preferred Embodiments
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In the following exemplary embodiment, the same elements will be designated with the same reference numbers.
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In Fig. 1, an adapter 10 is shown mounted on a drinking straw 12. The adapter 10 has a generally longitudinal extension between a first end 14 and a second end 16 and comprises an attachment element 18 and a mouthpiece 20 integrally formed with the attachment element 18. The mouthpiece 20 forms a drinking opening 22. Also shown in Fig. 1 is a dispensing opening 32 for aromatized air which will be detailed below.
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The attachment element 18 is provided with means for attaching and positioning a replaceable aroma container which is not shown in Fig. 1. Such means for attaching is an essentially ring-shaped protrusion 24 extending outwardly from the outer wall surface 26 of the attachment element 18 and being integrally formed with the attachment element 18. Further, a positioning protrusion 28 is provided which extends in a radially outward direction from the outer wall 26 of the attachment element 18 and is integrally formed with the attachment element 18. The positioning protrusion 28 has an outer circumferential wall 30, the shape of which deviates from a circular shape. In interaction with the specific aroma container 34 as shown in Fig. 2, such specific positioning protrusion 28 serves to position the replaceable aroma container 34 and to define one single rotational position of the aroma container around a longitudinal axis O as shown in Fig. 5.
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Likewise, other shapes of a replaceable aroma container are possible requiring a corresponding adaption of the positioning protrusion 28 and the geometry of the ring-shaped protrusion 24 serving a seating surface.
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The adapter is preferably made of a food-grade plastic material. Preferably, the adapter 10 as shown in Fig. 1 is integrally formed from plastic material.
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In Fig. 2, the adapter 10 according to Fig. 1 is shown mounted on a drinking straw 12 and with a replaceable aroma container 34.
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The replaceable aroma container 34 of the specific embodiment is shaped so as to surround the attachment element 18 and specifically the positioning protrusion 28. The replaceable aroma container 34 is substantially annular, comprising a circular ring-shaped outer sidewall, and an inner sidewall which deviates from a circular shape. In other words, the space surrounded by the inner sidewall has a cross-sectional area which is not circular. This exemplary geometry as illustrated in Fig. 2 of the inner sidewall of the replaceable aroma container allows for a defined positioning of the replaceable aroma container on the ring-shaped protrusion 24 and around the positioning protrusion 28 of the attachment element 18. As a result of this, the replaceable aroma container 34 can only be placed in one single annular position with respect to rotation around the longitudinal axis O. An air outlet opening 64 of the replaceable aroma container 34 is located in the inner sidewall, and an air inlet opening 66 is located in a bottom wall of the replaceable aroma container 34, preferably arranged diametrically opposed to the air outlet opening 64 so that the air flow flowing through the replaceable aroma container 34 has to travel as wide a travel distance as possible and can thus be enriched with aroma substance in a particularly effective manner.
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The shape of the replaceable aroma container 34 in the embodiment as shown in
Fig. 2 is only an example described in much detail in
WO 2021/233516 A1 incorporate by reference with respect to the outer geometry of the replaceable aroma container. However, any suitable shape of a replaceable aroma container can be provided.
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In Fig. 3, a cross-sectional view of the adapter with a replaceable aroma container 34 attached is shown.
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The attachment element 18 has a wall 36, the inner wall surface 38 of which is provided with an air guiding structure 40 formed as a complex shaped depression in the inner wall surface 38 of the wall 36. The wall 36 of the attachment element 12 encloses a receiving volume 42 for holding a drinking straw not shown in Fig. 3. Further, a stop member 46 can be provided close to the second end 16 of the adapter. The stop member 46 limits the insertion movement of a drinking straw 12 and gives a user tactile feedback when the adapter 10 has been properly mounted on the drinking straw 12.
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The air guiding structure 40 comprises several individual sections and specifically a first pressure equalization chamber 48 and a second pressure equalization chamber 50. The first pressure equalization chamber 48 and the second pressure equalization chamber 50 are interconnected by means of a first groove 52, and the second pressure equalization chamber 50 is in fluid communication with a second groove 54 which connects the second pressure equalization chamber 50 with the dispensing opening 32. A further section of the air guiding structure 40 is a third groove 56 formed in the stop member 46 which establishes the fluid communication between the second groove 54 and the dispensing opening 32 for aromatized air.
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Further, an air ingress opening 58 is provided which connects the air guiding structure 40 to an air outlet opening 64 in the inner circumferential sidewall of the replaceable aroma container 34. Accordingly, the air guiding structure 40, in the specific embodiment as shown in Fig. 3, is formed by the air ingress opening 58, the first pressure equalization chamber 48, the first groove 52, the second pressure equalization chamber 50, the second groove 54, the third groove 56 and the dispensing opening 32.
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As shown in Fig. 4, the first pressure equalization chamber 48 extends in a longitudinal direction between the first end 14 and the second end 16 of the adapter further towards the first end 14 of the adapter 10 than the air ingress opening 58. This has the effect that, in operation, when drinking liquid should enter the dispensing opening 32 and travel, under the influence of gravity towards the first end 14 of the adapter, will become trapped in the lowermost part of the first pressure equalization chamber 48 which is closer to the first end 14 of the adapter 10 than the position of the air ingress opening 58.
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As a further measure to avoid drinking liquid to pass through the air ingress opening 58 and to enter the replaceable aroma container 34, both pressure equalization chambers 48, 50 are provided with protrusions. In the second pressure equalization chamber 50, a second protrusion 62 is provided, whereas in the first pressure equalization chamber 48, a first protrusion 60 is provided. The term "protrusion" as used herein might not be fully appropriate because, as outlined above, the air guiding structure 40 is formed as a depression in the inner wall surface 38 so that the first protrusion 60 and second protrusion are in fact regions in which there is either no depression or a depression with a smaller depth than in surrounding regions.
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The second protrusion 62 in the second pressure equalization chamber 50 separates the flow of aromatized air flowing in an upwards direction towards the dispensing opening 32 in two partial streams flowing on both sides along the protrusion 62. Such separation of the aromatized air stream occurs because, as shown in the cross-sectional view in Fig. 5, the protrusion 62 has a height such that it abuts against the wall of the drinking straw 12 forcing the aromatized air to take a path along both sides of the protrusion 62.
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Likewise, the first protrusions 60 has height also abutting against the wall of the drinking straw 12 which also leads to a division of the air stream flowing upwards towards the dispensing opening 32 into two partial streams along both sides of the first protrusion 60. The first protrusion 60 has the additional effect that, as also shown in Fig. 5, drinking liquid entering the dispensing opening 32 for aromatized air is forced to flow down along both sides of the first protrusion 60 and to collect in the lower part of the pressure equalization chamber 48 where it is held by gravity and cannot enter the air ingress opening 58 if the adapter 10 is held in a position in which the second end 16 is at the upmost position or at least a position considerably higher that of the first end 14 of the adapter.
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In use, with reference to Fig. 5, a user drinks from the drinking opening 22 like through a conventional drinking straw. By applying sucking pressure, drinking liquid is conveyed in the direction of arrow B through the interior volume of the drinking straw acting as a fluid transporting duct. At the same time, the sub-pressure at the drinking opening 22 and the flow of liquid generate a sub-pressure inside the air guiding structure, which sub-pressure also acts via the fluid communication between the air ingress opening 58 and the air outlet opening 64 of the replaceable aroma container 34 inside the replaceable aroma container 34. This leads to ambient air entering through the air inlet opening 66 in a bottom wall of the replaceable aroma container 34 and into the interior volume of the aroma container. The air entering the replaceable aroma container 34 becomes enriched with aroma substance and leaves as aromatized air the replaceable aroma container 34 through the air outlet opening 64 in communication with the air ingress opening 58. The air ingress opening 58 leads into the air guiding structure 40 and specifically into the first pressure equalization chamber 48 with the first protrusion 60, where the air stream is divided in partial streams flowing along both sides of the first protrusion 60. The partial streams join again downstream of the first protrusion 60 and enter the first groove 52 leading into the second pressure equalization chamber 50. The stream of aromatized air is divided again into two partial streams flowing along both sides of the second protrusion 62. Downstream of the second pressure equalization chamber 50, the aromatized air flows through the second groove 54, the third groove 56 arranged in the stop member 46 and leaves the air guiding structure 40 through the dispensing opening 32 in the direction of arrow A.
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The adapter according to the invention is easy to manufacture. It is an integral one-part structure and the air guiding structure 40 is formed by a depression in the inner wall surface of the attachment element 18. Only in combination with a conventional drinking straw 12 attached to the adapter, the air guiding duct system is formed as a closed path guiding aromatized leaving a replaceable aroma container 34 along the drinking straw 12 and up to a position at the drinking opening 22. The adapter 10 can be used with a conventional drinking straw which neither needs to be inserted in a specific rotational orientation relative to the adapter nor be provided with an opening for directing aromatized air into the interior volume of the drinking straw. Therefore, the adapter according to the invention can be used together with a conventional drinking straw, or it can be attached to an existing drinking system including a drinking straw.
Reference list
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- 10
- adapter
- 12
- drinking straw
- 14
- first end of adapter
- 16
- second end of adapter
- 18
- attachment element
- 20
- mouthpiece
- 22
- drinking opening
- 24
- ring-shaped protrusion
- 26
- outer wall surface of attachment element
- 28
- positioning protrusion
- 30
- outer circumferential wall
- 32
- dispensing opening
- 34
- replaceable aroma container
- 36
- wall of attachment element
- 38
- inner wall surface
- 40
- air guiding structure
- 42
- receiving volume
- 46
- stop member
- 48
- first pressure equalization chamber
- 50
- second pressure equalization chamber
- 52
- first groove
- 54
- second groove
- 56
- third groove
- 58
- air ingress opening
- 60
- first protrusion
- 62
- second protrusion
- 64
- air outlet opening
- 66
- air inlet opening