阅读说明：本技术 用于制造蒸发器装置的方法、蒸发器装置和吸入器、优选电子香烟产品 (Method for producing a vaporizer device, vaporizer device and inhaler, preferably an electronic cigarette product ) 是由 S·博內 A·博恩 H·K·赵 于 2020-03-17 设计创作，主要内容包括：本发明涉及用于制造蒸发器装置(1)的方法,所述蒸发器装置用于吸入器(10)、优选用于电子香烟产品,具有至少一个电的蒸发器(60)、至少一个用于向所述蒸发器(60)提供电流的电管道(105a、105b)以及用于承载所述蒸发器(60)的载体(4),所述方法包括在所述蒸发器(60)和所述载体(4)之间施加有电传导能力的粘合剂(2),以便建立所述蒸发器(60)与所述电管道(105a、105b)的电连接,其中,执行附加的完全加热步骤,用于在所述蒸发器(60)和所述粘合剂(2)之间实现共晶连接。(The invention relates to a method for producing a vaporizer device (1) for an inhaler (10), preferably for an electronic cigarette product, having at least one electrical vaporizer (60), at least one electrical line (105 a, 105 b) for supplying current to the vaporizer (60), and a carrier (4) for carrying the vaporizer (60), comprising applying an electrically conductive adhesive (2) between the vaporizer (60) and the carrier (4) in order to establish an electrical connection of the vaporizer (60) to the electrical line (105 a, 105 b), wherein an additional full heating step is carried out for achieving a eutectic connection between the vaporizer (60) and the adhesive (2).)

1. Method for manufacturing a vaporiser arrangement (1) for an inhaler (10), preferably for electronic cigarette products, having at least one electric vaporiser (60), at least one electric conduit (105 a, 105 b) for supplying electric current to the vaporiser (60), and a carrier (4) for carrying the vaporiser (60),

applying an electrically conductive adhesive (2) between the evaporator (60) and the carrier (4) in order to establish an electrical connection of the evaporator (60) to the electrical conduits (105 a, 105 b), wherein,

an additional full heating step is performed for achieving a eutectic connection between the evaporator (60) and the adhesive (2).

2. Method according to claim 1, characterized in that the additional complete heating step is performed at a temperature of at least 400 ℃, preferably at least 550 ℃, further preferably at least 700 ℃.

3. Method according to any one of the preceding claims, characterized in that before the additional full heating step, the thermal hardening of the adhesive (2) is carried out at a temperature of at least 30 minutes, preferably at least 60 minutes and/or in the range between 150 ℃ and 290 ℃.

4. Evaporator device (1) for an inhaler (10), preferably for an electronic cigarette product, comprising

At least one electric evaporator (60) for evaporating a liquid (50) conveyed by the evaporator (60),

at least one electric conduit (105 a, 105 b) for supplying electric current to the evaporator (60) and

a carrier (4) holding the evaporator (60) and in or on which the electrical conduits (105 a, 105 b) are arranged,

it is characterized in that the preparation method is characterized in that,

an electrically conductive adhesive (2) is arranged between the evaporator (60) and the carrier (4), said adhesive establishing an electrical connection of the evaporator (60) to the electrical conduits (105 a, 105 b), wherein,

a eutectic connection is formed between the evaporator (60) and the adhesive (2).

5. The evaporator device (1) according to claim 4, wherein the adhesive (2) comprises a metal, in particular silver.

6. An evaporator device (1) according to any of claims 4 or 5, characterized in that the eutectic connection has more than 50 weight percent, advantageously more than 65 weight percent, still further advantageously more than 80 weight percent metal.

7. An evaporator device (1) according to any of claims 4-6, characterized in that the electrical conduits (105 a, 105 b) are at least partly constituted by the conductive adhesive (2).

8. An evaporator device (1) according to any of claims 4-7, characterized in that an additional metal layer (133), such as an aluminum-based metal layer, is applied onto the evaporator (60) in the contact area (131) between the evaporator (60) and the electrical conduits (105 a, 105 b).

9. The evaporator device (1) according to any of claims 4 to 8, characterized in that the carrier (4) is composed of a ceramic raw material.

10. Inhaler (10), in particular an electronic cigarette product, comprising a vaporiser arrangement (1) according to any one of claims 4-9.

Technical Field

The invention relates to a method for producing a vaporizer device for an inhaler, preferably for an electronic cigarette product, having at least one electric vaporizer, at least one electric line for supplying current to the vaporizer, and a carrier for carrying the vaporizer. The invention also relates to a vaporizer device and an inhaler, preferably an electronic cigarette product.

Background

Conventional electronic cigarette products or inhalers are based on the core coil technology (Docht-Wendel-technology). The liquid is transported by capillary force from the liquid reservoir along the wick until the liquid is heated by the electrically heatable coil and thereby evaporated. The wick is used as a liquid conducting connection between a liquid reservoir and a heating coil used as a vaporizer.

A disadvantage of the core coil technology is that the lack of liquid supply leads to local overheating, which may result in harmful substances. This so-called "Dry suck" is being avoided. In addition, such evaporator units are often not sealed due to manufacturing conditions, so that liquid may escape in an undesired manner, for example via air introduction and/or vapor removal.

In order to avoid the problems of the core coil technology, a generic evaporator is used which uses the technology disclosed in DE 102017111119 a 1. Here, the liquid is transported by capillary forces from the liquid reservoir to the inlet side of the evaporator by the wick structure. The evaporator evaporates the liquid and the evaporated liquid may be added to the air stream as a vapor and/or aerosol. The evaporator can be connected to the energy store for the purpose of supplying electrical energy via an electrical line. However, the electrical and/or mechanical coupling or contacting of the evaporator, for example on the electrical lines and/or the carrier, is not described in the cited prior art.

Disclosure of Invention

The object of the invention is to provide an improved evaporator contact which is stable, in particular at high temperatures, and which is as low ohmic as possible.

The invention solves this object with the features of the independent claims.

According to the invention, the method comprises applying an electrically conductive adhesive between the evaporator and the carrier in order to establish an electrical connection of the evaporator to the electrical conduit, wherein an additional full heating step (Ausheizschritt) is carried out for forming a eutectic connection between the evaporator and the adhesive. The invention recognizes that the electrically conductive adhesive between the evaporator and the carrier supports or provides a mechanical connection of the evaporator to the carrier not only in the case of thermally variable stresses, but at the same time establishes an electrical connection with the electrical line. The electrically conductive binder enables an efficient production of the evaporator arrangement.

By the additional complete heating step according to the invention, the adhesive achieves a eutectic connection in the contact region with the evaporator, which is lower ohmic than the connection established solely by adhesion and possible hardening. The eutectic connection between the evaporator and the adhesive is a connection in which the materials forming the evaporator and the adhesive constitute a eutectic alloy with each other. The resistance of the eutectic connection can be set in a targeted manner via its composition, which enables repeatable electrical coupling of the evaporator to the electrical line (heater chip bonding). The complete heating step according to the invention can be added in particular to the typical heating step for hardening the adhesive.

Preferably, an additional full heating step is carried out at a temperature of at least 400 ℃, preferably at least 550 ℃, further preferably at least 700 ℃, so that an eutectic connection can be reliably established, the eutectic point of which corresponds to a temperature which is higher than the temperature present at the time of evaporation and at the same time is sufficiently low that no parts of the evaporator device are damaged during this full heating step. In an embodiment having a silicon-containing vaporizer and a silver-containing binder, the additional full heating step is performed at a temperature of at least 800 deg.C, such as about 845 deg.C. The temperature used in the full heating step, which corresponds to the eutectic point for forming the eutectic connection, can be influenced by a metal layer applied on the evaporator.

Preferably, prior to the additional complete heating step, the adhesive is thermally hardened at a temperature of at least 30 minutes, preferably at least 60 minutes and/or in the range between 150 ℃ and 290 ℃, so that the evaporator can be electrically connected to the electrical line or the electrical connection between the evaporator and the electrical line can be prepared before the eutectic connection is established. This ensures the positioning of the evaporator, in particular before the eutectic connection is established. This minimizes the mechanical stresses, which are dependent on the temperature conditions, which can occur between the evaporator, the carrier and/or the electrical lines during the production of the evaporator arrangement. The temperature used for hardening, with respect to the complete heating step, can be defined as a function of the binder and/or the evaporator material and is clearly delimited from the knowledge of advantageous embodiments.

The invention also relates to a vaporizer device for an inhaler, preferably for an electronic cigarette product, comprising at least one electrical vaporizer for vaporizing a liquid delivered by the vaporizer, at least one electrical conduit for supplying an electrical current to the vaporizer, and a carrier holding the vaporizer and in or on which the electrical conduit is arranged.

According to the invention, an electrically conductive adhesive is arranged between the evaporator and the carrier, said adhesive establishing an electrical connection between the evaporator and the electrical line. The adhesive arranged between the evaporator and the carrier reduces the problem of mechanical stresses between the evaporator and the electrical pipe or carrier, which are determined by the temperature conditions, which may occur when the evaporator is heated to the operating temperature and cooled to room temperature due to the different coefficients of thermal expansion of the different materials on which the evaporator, the electrical pipe or the carrier are based.

According to the invention, a eutectic connection is formed between the evaporator and the adhesive. Thus, the electrical connection between the evaporator and the electrical conduit is low-ohmic, whereas the electrical contact between the evaporator and the electrical conduit by means of an adhesive without eutectic connection may be high-ohmic. A high ohmic contact resistance or transition resistance between the evaporator and the adhesive can be avoided by the eutectic connection. The eutectic connection is high temperature stable compared to the temperature present in the electronic cigarette when the liquid evaporates, because the temperature of the eutectic connection corresponding to the eutectic point is higher than the evaporation temperature of the liquid.

Advantageously, the binder comprises a metal to provide the binder with electrical conductivity and specific cost-effectiveness. Silver is particularly advantageous here. The silver-or metal-containing binder is temperature-stable, which is advantageous for applications for evaporators, since the evaporator is warmed during operation in order to evaporate the liquid. Metals and in particular silver promote the formation of eutectic bonds and can be provided and applied effectively as electrically conductive adhesives with, in particular, plastic-containing adhesive matrices.

Preferably, the eutectic connection has more than 50 weight percent, advantageously more than 65 weight percent, further advantageously more than 80 weight percent of metal, since the eutectic connection has a lower ohm with increasing metal fraction. The eutectic connection may also comprise more than 95 weight percent metal, for example a eutectic connection consisting of silver and silicon comprises approximately 97 weight percent silver, which means a particle fraction of approximately 89% silver.

Preferably, the electrical conduit is at least partly constituted by a conductive adhesive, so that the carrier is provided with the electrical conduit in an efficient manner. In particular, the section of the electrical line facing the evaporator can be formed by a conductive adhesive, and in particular the section facing away from the evaporator, which is provided for contacting external parts, for example an energy store, can be formed by a substance which is different from the conductive adhesive. Preferably, the section facing away from the evaporator can be made of gold, copper and/or other metals or alloys thereof and is connected in an electrically conductive manner to the section of the electrical line made of the adhesive facing the evaporator. The carrier and/or in particular the surface thereof can be pre-structured, so that an adhesive for the construction of the electrical conduits can be applied.

In an advantageous embodiment, an additional metal layer, for example an aluminum-based metal layer, is applied to the evaporator in the contact region between the evaporator and the electrical line, so that the evaporator can be provided with an electrical contact surface which can be connected to the electrical line in the contact region in a particularly effective manner. The evaporator can, for example, consist essentially of a silicon block, in particular doped, which has a metal layer on the surface. The metal layer may facilitate eutectic bonding and/or simplify electrical contact and/or material mating contact of the evaporator with the adhesive and/or the electrical conduit. The application of the metal layer can be carried out by depositing the metal onto an evaporator, in particular comprising silicon, in the contact area.

Preferably, the carrier is made of a ceramic material in order to thermally stabilize the carrier for holding the evaporator and/or to minimize the thermal coupling between the evaporator and the carrier. The ceramic support is chemically and mechanically stable with respect to the temperatures which occur during operation of the evaporator, for example up to 300 ℃, and with respect to the thermal load changes which occur over the life cycle of the evaporator, for example approximately 200 to 100000 times. The carrier must be compatible or biocompatible with the food, in particular at the temperatures present during evaporation, which are brought into contact with the liquid and/or aerosol or vapor, and which can be promoted by the ceramic starting material. The carrier body can be made of a ceramic matrix at least in the region of the evaporator. Other sections of the carrier that do not hold and/or do not contact the evaporator can be made of other materials, for example of plastic.

Drawings

The invention will be described in detail below with the aid of preferred embodiments with reference to the accompanying drawings, in which:

figure 1 shows a schematic view of an inhaler;

FIG. 2 shows a perspective cross section through an evaporator tank unit;

FIG. 3 shows a schematic perspective view of an evaporator;

FIG. 4 shows a schematic perspective view of an evaporator having a metal coating;

fig. 5 shows a schematic perspective view of a carrier;

FIG. 6 shows a schematic perspective view of an evaporator apparatus; and

fig. 7 shows a schematic perspective view of a carrier in another embodiment of the invention.

Detailed Description

Fig. 1 schematically shows an inhaler 10 or an electronic cigarette product. The inhaler 10 comprises a housing 11 in which an air channel 30 or chimney is arranged between at least one air inlet opening 231 and an air outlet opening 24 at the mouth end 32 of the smoking product 10. The mouth end 32 of the inhaler 10 represents here the end at which the consumer draws in for inhalation and thereby loads the inhaler 10 with a negative pressure and generates an air flow 34 in the air channel 30.

The inhaler 10 advantageously consists of a base part 16 and an evaporator tank unit 20 which comprises an evaporator device 1 with an evaporator 60 and a liquid reservoir 18 and which may in particular be constructed in the form of a replaceable cartridge. The liquid reservoir 18 may be refilled by the user of the inhaler 10. The air sucked in through the air inlet opening 231 is guided in the air channel 30 towards the at least one evaporator 60. The evaporator 60 is connected or connectable to the liquid reservoir 18, in which at least one liquid 50 is stored. For this purpose, a porous and/or capillary, liquid-conducting wick structure 19 is advantageously arranged at the inlet side 61 of the evaporator 60.

The evaporator 60 evaporates the liquid 50, which is transported from the liquid reservoir 18 by the wick structure 19 to the evaporator 60 by means of capillary forces, and adds the evaporated liquid to the air flow 34 at the outlet side 64 as aerosol/vapour.

The electronic cigarette 10 also comprises an electrical energy store 14 and an electronic control device 15. The energy store 14 is generally arranged in the base part 16 and can be, in particular, an electrochemical, disposable battery or a rechargeable electrochemical accumulator, for example a lithium-ion accumulator. The evaporator tank unit 20 is disposed between the energy storage 14 and the mouth end 32. In the base part 16 (as shown in fig. 1) and/or in the evaporator tank unit 20, the electronic control means 15 comprise at least one digital data processing device, in particular a microprocessor and/or microcontroller.

A sensor, for example a pressure sensor or a pressure switch or a fluid switch (string) is advantageously arranged in the housing 11, wherein the control device 15 can determine on the basis of a sensor signal given by the sensor that the consumer draws at the mouth end 32 of the smoking article 10 for inhalation. In this case, the control device 15 actuates the evaporator 60 such that the liquid 50 is added from the liquid reservoir 18 to the air flow 34 as aerosol/vapor.

At least one evaporator 60 is disposed in a portion of the evaporator tank unit 20 facing away from the mouth end 32. This makes it possible to electrically and effectively couple and operate the evaporator 60, in particular the base part 16. The air flow 34 is advantageously directed toward the air outlet opening 24 via the air channel 30 running axially through the liquid reservoir 18.

The liquid 50 to be metered and dispensed, which is stored in the liquid reservoir 18, is a mixture of, for example, 1, 2-propanediol, glycerol, water and preferably at least one flavoring agent and/or at least one active substance, in particular nicotine. The composition of the liquid 50 given is however not mandatory. In particular, the flavoring agent and/or the active substance, in particular nicotine, can be dispensed with.

In fig. 2 a perspective section through a schematic evaporator tank unit 20 is shown. The evaporator tank unit 20 comprises a block-shaped, preferably monolithic, heating body or evaporator 60, preferably made of an electrically conductive material, in particular a semiconductor material, preferably silicon. It is not necessary that the entire vaporizer 60 be constructed of an electrically conductive material. For example, it may be sufficient to coat the surface of the evaporator 60 with an electrically conductive or metallic coating or, preferably, with a suitable doping. In this case, the entire surface need not be coated, for example, a metallic or preferably nonmetallic or nonmetallic laminated metallic conductor circuit can be provided on a nonconductive or semiconductive substrate. It is not mandatory that the entire evaporator 60 be heated; for example, it may be sufficient for a section of the evaporator 60 or the heating layer to generate heat in the region of the outlet side 64. The evaporator 60 is warmed by electrical energy by means of its electrical resistance and may therefore be referred to as a resistance heater.

The evaporator 60 is advantageously equipped with a plurality of microchannels or liquid channels 62 which connect the inlet side 61 of the evaporator 60 to the outlet side 64 of the evaporator 60 in a liquid-conducting manner.

The average diameter of the liquid channel 62 is preferably in the range between 5 μm and 200 μm, further preferably in the range between 30 μm and 150 μm, and further preferably in the range between 50 μm and 100 μm. Based on this dimension, a capillary action is advantageously produced, so that the liquid penetrating into the liquid channel 62 at the inlet side 61 rises up through the liquid channel 62 until the liquid channel 62 is filled with liquid. The number of liquid channels 62 is preferably in the range between four and 1000. In this way, the heat input into the liquid channel 62 can be optimized and a reliable, high evaporation output and a sufficiently large vapor outlet area can be achieved.

The liquid channels 62 are advantageously arranged in an array. The array may be constructed in the form of a matrix with s columns and z rows, wherein s is advantageously in the range between 2 and 50, further advantageously between 3 and 30 and/or z is advantageously in the range between 2 and 50, further advantageously between 3 and 30. In this way, an effective and easily producible arrangement of the liquid channels 62 with a reliably high evaporation efficiency can be achieved.

The evaporator tank unit 20 comprises a carrier 4 with a through opening 104 for connecting the evaporator 60 and the liquid reservoir 18 in a liquid conducting manner. The carrier 4 and the evaporator 60 are constituent parts of the evaporator device 1, which enables an electrical and mechanical coupling of the evaporator 60. In order to provide the liquid 50 to the evaporator 60, a wick structure 19 is arranged in the through-going opening 104.

The inlet side 61 of the evaporator 60 is connected to the liquid reservoir 18 in a liquid-conducting manner via the wick structure 19. The wick structure 19 serves to passively transport the liquid 50 from the liquid reservoir 18 to the evaporator 60 by means of capillary forces. The wick structure 19 advantageously contacts the inlet side 61 of the evaporator 60 in a surface-like manner and covers the entire liquid channel 62 of the evaporator 60 on the inlet side. On the side opposite the evaporator 60, the wick structure 19 is connected to the liquid reservoir 18 in a liquid-conducting manner.

An advantageous volume of the liquid reservoir 18 lies in the range between 0.1ml and 5ml, preferably between 0.5ml and 3ml, further preferably between 0.7ml and 2ml or 1.5 ml.

The evaporator tank unit 20 is preferably connected and/or connectable with a heating voltage source 71 controllable by the control device 15, which heating voltage source is connected with the evaporator via electrical conduits 105a, 105b in contact areas 131 at opposite edge sections of the evaporator 60, such that a voltage Uh generated by the heating voltage source 71 induces an electrical current through the evaporator 60. Based on the ohmic resistance of the electrically conductive evaporator 60, the current causes the evaporator 60 to heat up and thus causes the liquid contained in the liquid channel 62 to evaporate. The vapor/aerosol generated in this manner escapes from the liquid passage 62 to the outlet side 64 and mixes with the air flow 34. When it is determined that there is an air flow 34 through the air passage 30 caused by a consumer's twitch, the control device 15 more accurately operates the heating voltage source 71, wherein the liquid located in the liquid passage 62 is driven out of the liquid passage 62 in the form of a vapour/aerosol by spontaneous heating.

The evaporation temperature is preferably in the range between 100 ℃ and 400 ℃, further preferably between 150 ℃ and 350 ℃, further preferably between 190 ℃ and 290 ℃.

Advantageously, the evaporator 60 can be made in segments from a wafer with a layer thickness preferably less than or equal to 1000 μm, further preferably 750 μm, still further preferably less than or equal to 500 μm, using thin-film layer technology. Advantageously, the surface of the evaporator 60 may be hydrophilic.

The evaporator tank unit 20 is arranged to meter in a liquid amount preferably in the range between 1 and 20 μ l, further preferably between 2 and 10 μ l, further preferably between 3 and 5 μ l, typically 4 μ l for each twitch by the consumer. Preferably, the evaporator tank unit is adjustable with respect to the amount of liquid/steam per draw, i.e. the amount of liquid/steam per draw time period of 1 to 3 s.

Advantageously, the operating frequency of the evaporator 60 generated by the heating voltage source 71 lies generally in the range 1Hz to 50kHz, preferably in the range 30Hz to 30kHz, still further advantageously in the range 100Hz to 25 kHz.

Preferably, the evaporator 60 is based on MEMS technology, in particular made of silicon and is therefore advantageously a micro-electromechanical system.

Fig. 3 shows a schematic perspective view of the evaporator 60. The evaporator 60 has an inlet side 61 and an outlet side 64. A plurality of liquid passages 62 extend between an inlet side 61 and an outlet side 64. Advantageously, the liquid channel 62 is arranged between edge sections of the evaporator 60 which are spaced apart from one another, in which edge sections contact regions 131 are provided, in particular for electrical and/or mechanical contacting of the evaporator 60. The evaporator 60 is block-shaped or square-shaped and the liquid channel 62 is in turn arranged between two contact areas 131 which are provided on one of the sides of the square-shaped evaporator 60 and constitute edge sections. The contact region 131 is arranged in this example in the edge section on the inlet side 61. Thereby, the evaporator 60 can be connected with the carrier 4 at the inlet side 61 and/or an electrical connection can be established with the electrical conduits 105a, 105 b. In other embodiments, however, the contact region 131 can also be arranged on other sides of the evaporator 60, in particular on the outlet side 64 opposite the inlet side 61 in this example. It is also conceivable to arrange the contact area 131 on one or more sides perpendicular to the inlet side 61 and/or the outlet side 64.

Fig. 4 shows a schematic perspective view of the evaporator 60 with the metal plating 133. The embodiment shown in fig. 4 is explained in view of the embodiment shown in fig. 3. The evaporator has a metal layer 133 in the contact region 131 in order to improve the connection to the adhesive 2, which is not shown in fig. 4, to increase the electrical conductivity of the contact region 131 and/or to promote a eutectic connection to be formed in a subsequent method step. The metal layer 133 may be deposited onto the surface of the evaporator 60 during the manufacturing process. Thereby, the electrical connection between the evaporator 60 and the electrical conduits 105a, 105b can be reproducibly established lower ohmically and more efficiently.

Fig. 5 shows a schematic perspective view of the carrier 4. Electrical conduits 105a, 105b are arranged on the carrier 4. The electrical lines 105a, 105b are arranged in such a way that the evaporator 60 is connected to the electrical lines 105a, 105b in the contact region 131 in the installed state. In this embodiment, the electrical conduits 105a, 105b are arranged on the carrier 4. In other embodiments, the electrical lines 105a, 105b may also run at least partially inside the carrier 4, wherein the electrical lines 105a, 105b must be arranged at the surface of the carrier 4 in the section provided for contacting the evaporator 60.

In the example shown in fig. 5, the adhesive 2 is applied to both electrical conduits 105a, 105 b. The electrical conduits 105a, 105b are in this example arranged on the surface of the carrier 4. Thereby, the adhesive 2 is arranged between the carrier 4 and the evaporator 60 in the mounted state (see fig. 6). The adhesive 2 is arranged on the electrical lines 105a, 105b in such a way that the evaporator 60 can be connected to the electrical lines 105a, 105b in the contact region 131 by means of the adhesive 2. The spacing between the locations at which the adhesive 2 is applied to the carrier 4 corresponds to the spacing of the contact areas 131 of the evaporator 60.

In this exemplary embodiment, a through-opening 104 is provided between the electrical lines 105a, 105b and in particular between the carrier 4, which through-opening makes it possible in particular for the inlet side 61 of the evaporator 60 to be contacted by the wick structure 19 in a liquid-conducting manner.

The adhesive may in particular be a silver-filled, one-component polyimide adhesive, for example of the type Panacol Ecolite 237. However, adhesives with other plastics and filled with other metals are also contemplated.

The electrical conduits 105a, 105b may be applied to the carrier 4 or the carrier 4 may be provided already with electrical conduits 105a, 105b pre-structured on the carrier 4. The electrical conduits 105a, 105b, which are advantageously pre-structured, may be composed of different materials or layered combinations of different materials, making them temperature stable, inert, wire bondable and/or solderable. Preferably, electrical conduits 105a, 105b made of gold are used.

In particular in the region of the passage opening 104 and/or in a section of the carrier 4 which contacts the evaporator 60 or is heated in operation by the evaporator 60, the carrier 4 can be made of a ceramic substrate.

Fig. 6 shows a schematic perspective view of an evaporator device 1 comprising a carrier 4 as explained with respect to fig. 5 and an evaporator 60 as explained with respect to fig. 3 or 4.

The electrical conduits 105a, 105b are electrically conductively connected to the evaporator 60 via the electrically conductive adhesive 2.

The additional full heating step achieves a eutectic connection for this purpose, so that the electrical connection between the evaporator 60 and the electrical conduits 105a, 105b is low-ohmic.

For example, a silicon-containing vaporizer 60 and a silver-containing binder 2 are provided. As is known to those skilled in the art, silver and silicon have a phase diagram with a eutectic point at a temperature of about 845 c and a silver content of about 89 atomic percent or 89 particle number percent, which corresponds to a silver content of about 97 weight percent. Therefore, an additional full heating step must heat the adhesive 2 to a temperature corresponding to the eutectic point to establish a eutectic connection between the evaporator 60 and the adhesive 2.

Fig. 7 shows a schematic perspective view of a carrier 4 in a further embodiment of the invention, in which the electrical conduits 105a, 105b are partially formed by a conductive adhesive 2. The carrier 4 can be pre-structured in such a way that the carrier 4 has one or more recesses 107 in which the adhesive 4 for constructing the electrical conduits 105a, 105b can be applied. The recess 107 is filled with adhesive 2 and the evaporator 60 can be placed on the adhesive 2. The depression 107 may facilitate retention of the evaporator 60. The adhesive 2 in the recess 107 forms a section of the electrical line 105a, 105b which contacts the evaporator 60 and is electrically conductively connected to a section of the electrical line 105a, 105b which faces away from the evaporator 60 or does not contact the evaporator 60. The section of the electrical conduits 105a, 105b not contacting the evaporator 60 may in particular protrude out of the carrier 4 to provide, for example, contacts and/or plugs (not shown) for electrical connection of the evaporator device 1 with external parts.

The pre-structuring of the carrier 4 may in other embodiments comprise a surface treatment such that the adhesive 2 achieves a better connection with the carrier 4 and/or the electrical conduits 105a, 105 b. The recess 107 is not necessary in this embodiment.

Reference numerals

1 evaporator device

2 adhesive agent

4 vectors

10 inhaler

11 casing

14 energy store

15 control device

16 base component

18 liquid storage

19-core structure

20 evaporator storage tank unit

24 air outlet opening

30 air channel

32 mouth end

34 air flow

50 liquid

60 evaporator

61 entrance side

62 liquid channel

64 outlet side

71 heating voltage source

104 through opening

105a, 105b electrical conduit

107 concave

131 contact area

133 metal layer

231 air inlet opening