EVAPORATOR DEVICE FOR AN INHALER, AND METHOD FOR PRODUCING AN INHALER

Abstract

A vaporizer device for an inhaler, in particular for an electronic cigarette product or a medical inhaler, comprising: a vaporizer film, which in turn comprises a layer system with a polymer film and at least one metal film which contacts the polymer film over its surface and is designed as a heating element a liquid reservoir, and a wick structure, which is configured to supply the vaporizer film with liquid from the liquid reservoir, wherein the vaporizer film comprises at least one first receiving opening for receiving liquid and at least one dispensing opening for dispensing vaporized liquid, wherein the vaporizer film is in contact with the wick structure via the base surface, wherein the vaporizer film forms at least one supply channel, via which the at least one first receiving opening can be supplied with liquid from the wick structure.

Claims

1-22. (canceled)

23. A vaporizer device for an inhaler, comprising: a vaporizer film, wherein the vaporizer film comprises a layer system with a polymer film and at least one metal foil, wherein the at least one metal foil makes surface contact with the polymer film and is designed as a heating element, a liquid reservoir, and a wick structure, which is arranged to supply the vaporizer film with liquid from the liquid reservoir, wherein the vaporizer film comprises at least one first receiving opening for receiving liquid and at least one dispensing opening for dispensing vaporized liquid, wherein the vaporizer film is in contact with the wick structure via a base surface, wherein the vaporizer film forms at least one supply channel, via which the at least one first receiving opening can be supplied with liquid from the wick structure.

24. The vaporizer device according to claim 23, wherein the at least one supply channel is formed by a fold of the vaporizer film.

25. The vaporizer device according to claim 24, wherein the fold comprises two opposing folding surfaces which are connected to one another via at least one folding edge, wherein at least 20% of the two opposing folding surfaces are aligned parallel to each other.

26. The vaporizer device according to claim 24, wherein a plurality of folds are provided, wherein the folds of the plurality of folds are spaced apart by an intermediate portion of the vaporizer film.

27. The vaporizer device according to claim 23, wherein at least one second receiving opening is provided, which is arranged on the base surface, wherein the at least one second receiving opening can be supplied with liquid directly via the wick structure.

28. The vaporizer device according to claim 23, wherein at least 20% of the areal extent of the vaporizer film forms the at least one supply channel.

29. The vaporizer device according to claim 23, wherein the at least one supply channel is configured to direct the liquid from the wick structure along a main flow direction to the at least one first receiving opening, wherein the main flow direction encloses an angle between 30° and 150° with the base surface.

30. The vaporizer device according to claim 23, wherein an extension (b) of the at least one supply channel in orthogonal direction with respect to the base surface corresponds to at least 5 times a height (a) of the vaporizer film.

31. The vaporizer device according to claim 23, wherein the at least one supply channel is dimensioned such that the liquid is transferred from the wick structure to the at least one first receiving opening under action of capillary forces.

32. The vaporizer device according to claim 1, wherein a support element is provided, on an upper side of which the vaporizer film is arranged, and on a lower side of which the liquid reservoir is arranged, wherein an opening is provided for receiving the wick structure, wherein the opening fluidically connects the upper side to the lower side.

33. The vaporizer device according to claim 23, wherein the base surface is a flat surface.

34. The vaporizer device according to claim 23, wherein the base surface is a partial shell surface of a cylinder.

35. The vaporizer device according to claim 34, wherein the wick structure comprises a cylindrical shape with a longitudinal axis, wherein the wick structure is surrounded by the base surface of the vaporizer film, wherein a main flow direction of the at least one supply channel extends in a radial direction with respect to the longitudinal axis of the wick structure.

36. The vaporizer device according to claim 35, wherein the vaporizer film is surrounded by an outer ring so that a flow channel is formed between the vaporizer film and the outer ring.

37. An inhaler, comprising a vaporizer device according to claim 23.

38. A cartridge for an inhaler, comprising a vaporizer device according to claim 23.

39. A method for operating a vaporizer device, comprising: providing a vaporizer device according to claim 23, providing an electrical heating voltage to the vaporizer film to generate the vaporized liquid.

40. A method for manufacturing a vaporizer device, wherein the vaporizer device comprises a vaporizer film arranged on a support element, wherein the vaporizer film forms at least one supply channel, with which the vaporizer film can be supplied via a wick structure with liquid to be vaporized from a liquid reservoir, wherein the supply channel is formed by a fold of the vaporizer film, wherein the method comprises the following steps: a) providing a base material for manufacture of the vaporizer film comprising a substrate of polyimide with a copper lamination applied thereto on one side; b) patterning the copper lamination by an etching process so that a copper pattern is formed on the substrate; c) applying a polyimide cover layer to a side of the substrate with the copper pattern; d) creating a passage opening through which an upper side of the vaporizer film is fluidically connectable to a lower side of the vaporizer film via a laser; e) incising a folding edge via a laser so that an incision is formed; f) folding the vaporizer film along the incised folding edge; and g) joining the folded vaporizer film to the support element.

41. The method according to claim 40, wherein in step b) the following sub-steps are carried out: b1) applying a photoresist to the copper lamination; b2) exposure of the photoresist in predefined areas; b3) developing the photoresist so that remaining photoresist forms a protective layer for the copper lamination in the predefined areas; b4) applying an etchant to a side with the developed photoresist so that the copper lamination remains on the substrate only in the predefined areas; b5) removing the remaining photoresist.

42. The method according to claim 40, wherein in step c) applying the polyimide cover layer is carried out by lamination in a vacuum press.

43. The method according to claim 40, wherein in step e) contacting points for supplying the vaporizer film with an electrical heating voltage are additionally exposed via the laser.

44. The method according to claim 40, wherein in step e) the vaporizer film is additionally cut to size for connection to the support element.

Description

[0064] The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures. Thereby shows

[0065] FIG. 1 a schematic cross-sectional view of a vaporizer device with a supply channel;

[0066] FIG. 2 a schematic cross-sectional view of a vaporizer film;

[0067] FIG. 3 a schematic cross-sectional view of a vaporizer device with two supply channels;

[0068] FIG. 4 a sectional cross-sectional view of a vaporizer device with a cylindrical wick structure;

[0069] FIG. 5 a schematic cross-sectional view of a fold of a vaporizer film;

[0070] FIG. 6 the steps a) and b) of a manufacturing process of a vaporizer device;

[0071] FIG. 7 the steps c) to e) of a manufacturing process of a vaporizer device;

[0072] FIG. 8 a vaporizer film after performing the process step f) from a first perspective;

[0073] FIG. 9 a vaporizer film after performing process step f) from a second perspective;

[0074] FIG. 10 a vaporizer device after carrying out process step g) from a perspective view.

[0075] FIG. 1 shows a vaporizer device 1 comprising a vaporizer film 2, which is attached to an upper side 19 of a support element 18 via a connecting means 25, a liquid reservoir 6, which is arranged on a lower side 20 of the support element 18, and a wick structure 7, which is arranged to supply the vaporizer film 2 with liquid to be vaporized from the liquid reservoir 6.

[0076] Of course, it is in principle also possible to provide two or more liquid reservoirs 6.

[0077] The support element 18 comprises an opening 21 into which the wick structure 7 is inserted. Thus, the liquid to be vaporized can be conveyed from the liquid reservoir 6 by means of the wick structure 7 through the opening 21 to the vaporizer film 2. Furthermore, the liquid reservoir 6 comprises a bar 41 via which the wick structure 7 can be pressed in between the liquid reservoir 6 and the vaporizer film 2. In the embodiments shown, a fleece, for example a glass fiber fleece, is provided as the wick structure 7.

[0078] The vaporizer film 2, or a metal foil 5 included therein, which is operable as a heating element, is preferably connected to the support element 18 via a connecting means 25 in the form of a soldered or sintered connection.

[0079] An exemplary illustration of the vaporizer film 2 is shown schematically in FIG. 2. The vaporizer film 2 comprises a layer system 3, which in turn comprises a polymer film 4 and the at least one metal foil 5 contacting the polymer film 4 on its surface. Preferably, the polymer film 4 is laminated onto the metal foil 5. In the embodiment according to FIG. 2, the metal foil 5 is completely surrounded by the polymer foil 4. The metal foil 5 is thus completely wrapped in the polymer foil 4. It can thus be ensured that the liquid cannot come into contact with the metal foil even during operation. The polymer film 4 is preferably a polyimide film.

[0080] The vaporizer film 2 is perforated so that a first receiving opening 8 on a lower side 40 can be fluidically connected to a dispensing opening 9 on an upper side 27. The first receiving opening 8 and the dispensing opening 9 thus together form a respective fluid-permeable passage opening 26.

[0081] The wick structure 7 shown in FIG. 1 is preferably made of a porous and/or capillary material which, due to capillary forces, is capable of passively replenishing liquid vaporized by the vaporizer film 2 from the liquid reservoir 6 to the vaporizer film 2 in sufficient quantity to prevent the passage opening 26 from running dry and any problems resulting therefrom.

[0082] The metal foil 5 according to FIG. 2 is arranged as a heating element, for example in the form of an ohmic heater. When the vaporizer film 2 of FIG. 2 is used as a component of the vaporizer device 1 of FIG. 1, vaporization of the liquid occurs within the passage opening 26, wherein the liquid is conveyed from the liquid reservoir 6 via the wick structure 7, for example, by capillary forces. In the operating state, activation of the metal foil 5 occurs in certain phases, for example when an inhalation puff is detected by a user, by application of a heating voltage to two contacting points 38 (see FIGS. 7 to 10) of the metal foil 5 and flow of an electric current through the metal foil 5 so that it heats up. Consequently, heat is also generated in the fluid-permeable passage opening 26. As the fluid flows through the fluid-permeable passage opening 26 starting from the first receiving opening 8, the fluid is heated to such an extent that it reaches the vaporous aggregate state and leaves the dispensing openings 9 as vapor. As a result of the vaporization, volume is freed up within the passage opening 26 into which liquid can creep due to the capillary forces. Further supply of liquid takes place via the supply channel 11 and the wick structure 7 from the liquid reservoir 6. During the vaporization process in the passage opening 26, there is thus a continuous replenishment of liquid from the liquid reservoir 6 via the wick structure 7.

[0083] As can be seen from FIG. 1, the first two receiving openings 8 are not directly supplied with liquid via the wick structure 7. The supply takes place via a supply channel 11 fluidically connected between the first receiving opening 8 and the wick structure 7, which is formed by the vaporizer film 2 itself.

[0084] The supply channel 11 is formed by a fold 14 of the vaporizer film 2, which is shown enlarged in a cross-sectional view in FIG. 5. The fold 14 of the vaporizer film 2 forms two opposing folding surfaces 15, which are connected to each other by a folding edge 16. The opposing folding surfaces 15 of a fold 14 can be irregularly shaped, but are aligned parallel to one another, for example, in partial sections or partial surfaces whose proportion of the total area of the folding surfaces 15 is, for example, more than 20%. A parallel extension of the opposing folding surfaces 15 is advantageous, because in this way the effect of the capillary forces can be predefined in the best possible way.

[0085] Preferably, the extension b of the fold 14 in a direction orthogonal to an adjacent base surface 10 of the vaporizer film 2 is at least 5 times the height a of the vaporizer film 2. This results in a more spatially pronounced design of the vaporizer film 2 in comparison to the otherwise only planar arranged vaporizer films 2 from the prior art.

[0086] The fold 14 is designed in such a way that it is oriented perpendicularly with respect to the base surface 10 or to an upper side 19 of the support element 18, comp. FIG. 1. By a perpendicular orientation of the fold 14 is meant that its folding surfaces 15 are oriented orthogonally to the adjacent base surface 10.

[0087] Thus, the supply channel 11 formed by the fold 14 is also oriented perpendicularly with respect to the base surface 10. This configuration of the fold 14 results in a main flow direction 13 of the fluid within the supply channel 11. The main flow direction 13 is the flow direction in which the majority of the fluid flows from the wick structure 7 to a first receiving opening 8 within the at least one supply channel 11. Accordingly, the main flow direction 13 is also oriented orthogonally with respect to the base surface 10 adjacent to the fold 14.

[0088] The two first receiving openings 8 are provided at the folding surfaces 15, so that the fluid-permeable passage openings 26 are flowed through in a direction which is oriented parallel to the base surface 10.

[0089] Further, the fold 14 in FIG. 5 comprises exactly two of the fluid-permeable passage openings 26. Of course, the fold 14 may comprise only a single one of the passage openings 26, or more than two of the passage openings 26. Where multiple passage openings 26 are provided, they may also be arranged in series with respect to an axis perpendicular to the drawing plane of FIG. 5. Alternatively or additionally, the passage openings 26 may also be arranged one above the other with respect to an axis orthogonal to the base surface 10.

[0090] The passage openings 26 shown in FIG. 5 comprise in the orthogonal direction with respect to the upper side 27 of the vaporizer film 2 which is opposite to the base surface 10, a distance c from the upper side 27 which corresponds to more than 50% of the extension b in the orthogonal direction of the fold 14, preferably more than 60%, further preferably more than 70%. This spacing of the passage openings 26 and thus also of the first receiving openings 14 from the upper side 27 can ensure a sufficient liquid column in the supply channel 11, so that thermal decoupling of the metal foil 5 designed as a heating element is made possible. The column of liquid located in the fold 14 causes the metal foil 5, which gives off thermal energy during operation, to be insulated from the wick structure 7 and the two liquid reservoirs 6, so that the energy efficiency of the vaporizer device 1 can be increased.

[0091] When the vaporizer device 1 of FIG. 1 is operated, the heat generated in the fluid-permeable passage opening 26 causes the liquid to be vaporized to be fed from the liquid reservoirs 6 into the passage opening 26 by means of the wick structure 7 and the supply channel 11. There, the liquid is heated at least to boiling temperature so that the fluid vaporizes and escapes from the dispensing opening 9 in a gaseous state. During this process, i.e. while the metal foil 5 is activated, i.e. heats, fluid is continuously supplied from the liquid reservoirs 6 by means of the wick structure 7 and the supply channel 11 or through it, so that continuous vaporization of fluid can take place.

[0092] Furthermore, it can be seen from FIG. 1 that the dispensing of the vapor does not only take place via the dispensing openings 9, which are associated with an outer surface 28 perpendicular to the base surface 10 of the fold 14. In addition, dispensing openings 9 are also arranged on the vaporizer film 2 on the upper side 27 of the vaporizer film 2, which is opposite the base surface 10. These dispensing openings 9 are fluidically connected to second receiving openings 12, which can be supplied with liquid directly via the wick structure 7. The second receiving openings 12 are thus not supplied with liquid via the supply channel 11. The passage openings 26 associated with the second receiving openings 12 can, however, be designed in exactly the same way as those which are supplied with liquid via the supply channel 11; in this respect, reference is made to the explanations on FIG. 2.

[0093] The combination of first receiving openings 8, which are supplied via the supply channel 11, and second receiving openings 12, which are supplied directly via the wick structure 7, allows vaporized liquid to be dispensed in different spatial directions, so that overall the surface area of the vaporizer film 2 that can be used for vaporization via the dispensing openings 9 is increased. Thus, the total amount of vaporization per inhalation puff can be increased.

[0094] FIG. 3 shows a vaporizer device 1 with the same basic structure as the vaporizer device 1 of FIG. 1, but with the difference that in addition to the first fold 14a, a second fold 14b is provided, which is spaced from the first fold 14a by an intermediate portion 17.

[0095] Each of the two folds 14a and 14b comprises two first receiving openings 8 and dispensing openings 9 associated therewith. Of course, the number of receiving openings 8 and the number of passage openings 26 correlating therewith can be varied as desired, as has already been explained in the embodiment according to FIG. 1.

[0096] Furthermore, the intermediate portion 17 also comprises at least one second receiving opening 12, which is supplied with liquid directly via the wick structure 7. In addition, a further second receiving opening 12 is provided to the left of the first fold 14a and to the right of the second fold 14b, respectively. This arrangement has proved to be advantageous because vaporized liquid can flow around each of the folds 14a and 14b on both sides starting from the second receiving openings 12, and at the same time an additional flow around the folds 14a and 14b is made possible starting from the first receiving openings 8 which are associated with the folds 14a and 14b directly. In this way, the amount of vaporization per inhalation puff can be significantly increased and, at the same time, the thermal decoupling of the metal foil 5 with respect to the wick structure 7 or the two liquid reservoirs 6 can be increased due to the insulating effect of the liquid column present in the supply channels 11 of the first and second folds 14a and 14b.

[0097] Of course, more than two folds 14a and 14b may be provided, further increasing the effect. Where multiple folds 14a and 14b are provided, they are preferably aligned parallel to each other, i.e. the folding edges 16 of the multiple folds 14a and 14b are aligned parallel to each other. Furthermore, for example, all main flow directions 13 in the supply channels 11 formed by the folds 14 are oriented orthogonally to the base surfaces 10 adjacent to the respective fold 14.

[0098] FIG. 4 shows an embodiment of the vaporizer device 1 having a cylindrical wick structure 7 with a longitudinal axis 24 of the wick structure 7 oriented perpendicular to the drawing plane. It can be seen that the vaporizer film 2 surrounds the circumferential surface of the cylindrical wick structure 7, wherein a plurality of folds 14 are provided extending in a radial direction with respect to the longitudinal axis 24. This means that the folding edge 16, comp. also FIG. 5, is furthest away from the longitudinal axis 24 in the radial direction with respect to the longitudinal axis 24. The folding edge 16 is then aligned parallel to the longitudinal axis 24, for example.

[0099] In the embodiment according to FIG. 4, the supply channels 11 are formed by a plurality of folds 14. In this embodiment, vaporization of the liquid takes place exclusively via passage openings 26, which are supplied with liquid via first receiving openings 8 through a supply channel 11.

[0100] Of course, in addition to the passage openings 26 associated with the folds 14, passage openings 26 can also be provided which are supplied with liquid directly via the wick structure 7, i.e. via a second receiving opening 12. For example, at least one passage opening 26 can be provided between each fold 14, which is supplied with liquid via a second receiving opening 12.

[0101] In the case of a cylindrical wick structure 7, the base surface 10 is not flat but a curved surface. In this case, if the main flow direction 13 in the supply channel 2 is oriented orthogonally to the adjacent base surface 10, then in the cross-sectional view shown in FIG. 4, this refers to a tangent 29 through the point of the base surface 10 immediately adjacent to the fold 14.

[0102] The corresponding liquid reservoir 6, which supplies liquid to the wick structure 7, is not shown in FIG. 4. However, this may be arranged, for example, behind and/or in front of the wick structure 7 in the axial direction with respect to the longitudinal axis 24. Accordingly, the liquid to be vaporized is transported out of the liquid reservoir 6 in the axial direction by the wick structure 7 and then deflected in the radial direction with respect to the longitudinal axis 24 in order to deliver the liquid to be vaporized to the vaporizer film 2 or to the supply channel 11 formed by the vaporizer film 2.

[0103] In the embodiment according to FIG. 4, the vaporizer film 2 is surrounded by an outer ring 22, so that a plurality of flow channels 23 is formed between the vaporizer film 2 and the outer ring 22. During an inhalation puff by a user, flow then passes through the plurality of flow channels 23 in the direction of the longitudinal axis 24.

[0104] FIG. 6 shows the method steps a) and b) of a method 30 for manufacturing the vaporizer device 1. In a first method step a), a base material 31 comprising a substrate 32 and a copper lamination 33 applied thereto is provided.

[0105] The subsequent process step b), in which the copper lamination 34 is patterned to produce a copper pattern 42, is subdivided into process steps b1) to b5). In process step b1), a photoresist 34 is laminated onto the copper lamination 33, which is exposed in predefined areas in process step b2). This can be done, for example, by appropriate direct illumination or by means of a mask. In process step b3), the photoresist 34 is developed, i.e. only a resist mask resulting from the exposure remains on the copper lamination 33; the remaining photoresist 34 is removed. In process step b4), an etchant is applied to the side with the developed photoresist 34 so that the copper lamination is etched away at the areas where there is no protection by the resist mask formed by the photoresist 34. A copper pattern 42 is thus formed from the copper lamination 33 covering the entire surface. In process step b5), the remaining photoresist 34 is then removed so that only the copper pattern 42 remains on the substrate 32. Preferably, the copper pattern 42 comprises a meander shape. The result of process step b), namely the copper pattern 42 deposited on the substrate 32, is shown schematically in FIG. 6 below.

[0106] FIG. 7 shows the process steps c) to e) of process 30. In process step c), a polyimide cover layer 36 is applied to the side of the substrate 32 with the copper pattern 42, so that the copper pattern 42 forming the metal foil 5 (see FIG. 2) is completely embedded in layers of polyimide, i.e. the substrate 32 formed from polyimide and the polyimide cover layer 36. The polyimide cover layer 36 is laminated on one side in a vacuum press, which results in a curvature of the intermediate product thus formed and in such a way that the upper side 27, i.e. the side with the polyimide cover layer 36, is concavely curved; see illustration in FIG. 7 c) below.

[0107] In process step d), the intermediate product now present, comprising the substrate 32, the copper pattern 42 and the polyimide cover layer 36, is then perforated by means of a laser, so that fluidic connections are formed between the upper side 27 and the lower side 12. In this way, the passage openings 26 are formed, which connect the first and second receiving openings 8 and 12 respectively with the dispensing openings 9; see also FIGS. 1 to 5. As can be clearly seen in FIG. 7, the perforation is carried out exclusively in areas in which no copper pattern 42 is located, i.e. between two areas with a copper pattern 42.

[0108] In process step e1), a folding edge 16 is then additionally incised by means of a laser, wherein a resulting incision 37 preferably completely penetrates the polyimide cover layer 36, the substrate 32 is preferably only partially incised. In process step e2), several contacting points 38 are exposed by means of the laser, i.e. the polyimide cover layer 36 is removed by the laser at the corresponding point until part of the copper pattern 42 is exposed.

[0109] If necessary, the vaporizer film 2 can still be cut or trimmed as an intermediate step so that it comprises the correct size for connecting to the support element 18.

[0110] FIGS. 8 and 9 show the vaporizer film 2 in a folded state, and thus the result of process step f). The folding is performed along the incised folding edges 16, so that sharp folding edges 16 can be obtained. FIG. 8 shows the vaporizer film 2 from a perspective looking at the upper side 27. It can be clearly seen that the folding surfaces 15 are curved due to the pre-stressing generated in process step c). Furthermore, the contact points 38 as well as the meander-shaped copper pattern 42 shimmering through the polyimide cover layer 36 can be seen.

[0111] FIG. 9 shows the vaporizer film 2 from a perspective looking at the lower side 40. Furthermore, a curvature 39 of the vaporizer film 2 is indicated.

[0112] FIG. 10 shows the vaporizer film 2 in a state connected to the support element 18, i.e. after completion of process step g).

[0113] FIG. 10 shows a perspective view of a vaporizer device 1 with a similar basic structure as the embodiment of the vaporizer device 1 shown in FIG. 1. It can be seen that the fold 14 protrudes like a fin from the plane formed by the upper side 27 of the vaporizer film 2.

[0114] Due to the curvature 39 of the vaporizer film 2 generated in the process step c), the fold 14 in the state connected to the support element 18 comprises a prestress, which results in the fold 14 comprising a more stable structure and the sharp folding edge 16 can also be maintained permanently, as for example in operation, in transport situations or in case of improper handling. It can further be seen that the vaporizer film 2 is connected to the upper side 19 of the support element 18. The vaporizer film 2 comprises four passage openings 26a, 26b (not visible rear side of the fold 14), 26c and 26d, wherein two passage openings 26a and 26b are each supplied with liquid to be vaporized through a first receiving opening 8 (comp. FIG. 1) and two further passage openings 26c and 26d are each supplied with liquid to be vaporized through a second receiving opening 12 (comp. FIG. 1). Accordingly, a discharge of the vaporized liquid takes place on both sides of the fold 14 both on an upper side 27 of the vaporizer film 2 and simultaneously on the outer surfaces 28 of the fold 14.

[0115] As described above, the metal foil 5 formed by the copper pattern 42 comprises meander-shaped patterns within the polymer foil 4 formed by the substrate 32 and the polyimide cover layer 36, wherein the meander-shaped patterns comprise separately controllable sections. Separately controllable means that the respective section comprises separate contacting points 38 and thus the heating voltage applied to the respective section is individually adjustable. For this purpose, the respective section is electrically insulated from the other sections of the copper pattern 42. A separately controllable section of the copper pattern 42 is referred to as a controllable channel. Each of these sections forms an ohmic heater, wherein it has been found advantageous if each separately drivable section of the metal foil 5 or metal pattern 42 comprises a resistance between 1 and 3Ω, for example about 2Ω. Preferably, the embodiment in FIG. 10 comprises four separately controllable channels, wherein the passage openings 26a, 26b, 26c and 26d are each associated with one of these four channels, so that the passage openings 26a to 26d are separately controllable via the channels.

[0116] By attaching the vaporizer film 2 to the support element 18 and/or to the wick structure 7 by means of the connecting means 25, the vaporizer film 2 can be reliably held in the transformed position.

[0117] With the vaporizer device 1 according to FIG. 10, it is possible, for example, to vaporize an amount of 7.4 mg of liquid during an inhalation puff of three seconds; at the same time, an energetic efficiency of 60% and more can be achieved under usual room conditions.