CN216627505U - Induction transmitter, aerosol generating device and system - Google Patents

Abstract

The utility model discloses an inductive emitter for an aerosol-generating device, the aerosol-generating device comprising a heating chamber for receiving an aerosol-generating article in operation, a susceptor being present in the heating chamber for receiving energy emitted by the inductive emitter in operation, characterised in that the inductive emitter comprises an inductive coil having a magnetic field axis, the inductive coil being arranged to surround the heating chamber and at least a portion of the susceptor, the inductive coil being displaceable relative to the heating chamber in operation.

Description

Induction transmitter, aerosol generating device and system

Technical Field

The utility model relates to a novel tobacco technology field, in particular to induction heating aerosol generates device.

Background

In recent years, with the growing concern of people on health, people are aware that traditional cigarettes have certain harm to health, and the problem of influence of traditional cigarettes on health and environment is gradually paid attention to by countries all over the world.

The existing cigarette heating appliance mainly utilizes the principle of resistance heating, and the heating modes mainly comprise inner core heating, peripheral heating and internal and external mixed heating. The smoking set heated by the inner core usually uses a needle type heating element because the cigarette is convenient to insert, the cross-sectional area of the heating element needs to be smaller, so that the cigarette is overheated in the heating process, the cigarette medium close to the heating element is difficult to be heated, and the cigarette is unevenly heated.

Electromagnetic induction heating is a method of utilizing electromagnetic induction to generate electric eddy currents in heated materials, and the heating purpose is achieved by means of the energy of the eddy currents. The electromagnetic induction heating process is actually a comprehensive embodiment of an electromagnetic induction process and a heat conduction process, wherein the electromagnetic induction process has a dominant role. It influences and to some extent determines the heat transfer process. The thermal energy required for the heat conduction process is actually provided by the eddy current power generated during electromagnetic induction. As a non-contact heating mode, the induction heating body does not need to be electrically connected with the heating control part, so that the degree of freedom of design is large, and the induction heating device is very suitable for being applied to the field of novel tobacco products. The key components in the electromagnetic induction heating principle include an induction transmitter with an induction coil and a susceptor as an induction heating body.

The heating power of electromagnetic induction heating in the novel tobacco field at present has higher requirements on circuit design, software programming and the like by controlling voltage, current or alternating current frequency. In addition, the induction coil is fixed in position in the smoking article and cannot be used to adjust and control the heating position or the spatial distribution of the heating temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel heating power adjusting mode of an induction heating aerosol generating device, thereby reducing the requirements on circuit design and software programming, and adjusting and controlling the heating position or the heating temperature spatial distribution in use.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an inductive emitter for an aerosol-generating device, the aerosol-generating device comprising a heating chamber for receiving an aerosol-generating article in operation, a susceptor being present in the heating chamber for receiving energy emitted by the inductive emitter in operation, the inductive emitter comprising an induction coil having a magnetic field axis, the induction coil being arranged to surround the heating chamber and at least a portion of the susceptor, the induction coil being displaceable relative to the heating chamber in operation.

Further, the induction coil changes the number distribution of turns of the induction coil along the magnetic field axis by being displaced relative to the heating chamber.

Further, the induction coil changes a distribution of turns of the induction coil along the magnetic field axis by compressing or stretching at least a portion of the induction coil.

Further, the induction coil changes the number distribution of turns of the induction coil along the magnetic field axis by compressing or stretching the whole or part of the induction coil.

Further, the induction coil changes a distribution of turns of the induction coil along the magnetic field axis by compressing one portion of the induction coil and stretching another portion of the induction coil.

Further, the induction coil changes a distribution of turns of the induction coil along the magnetic field axis by twisting at least a portion of the induction coil.

Further, the induction coil changes the distribution of turns of the induction coil along the magnetic field axis by twisting all or part of the induction coil in or against the winding direction.

Further, the induction coil changes a distribution of turns of the induction coil along the magnetic field axis by twisting one portion of the induction coil in a winding direction and twisting another portion of the induction coil against the winding direction.

An aerosol-generating device comprising an inductive transmitter according to any preceding claim, the aerosol-generating device further comprising: a power supply connected to the induction coil and configured to provide high frequency current to the induction coil under control of the controller, a heating chamber for receiving, in operation, an aerosol-generating article, and a controller within which, in operation, there is a susceptor for receiving energy emitted by the inductive emitter.

An aerosol-generating system comprising an aerosol-generating device as described above and an aerosol-generating article, wherein the aerosol-generating device contains the susceptor.

An aerosol-generating system comprising an aerosol-generating device and an aerosol-generating article as described above, wherein the susceptor is disposed around the heating chamber, the susceptor in operation surrounding at least a portion of the aerosol-generating article.

An aerosol-generating system comprising an aerosol-generating device as described above and an aerosol-generating article, wherein the susceptor is disposed inside the heating chamber, the susceptor being at least partially inserted into the aerosol-generating article in use.

Wherein the aerosol-generating article is a smoking article comprising an aerosol-forming substrate which generates upon heating an aerosol which is inhalable directly into a user's lungs through the user's mouth.

Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol-forming substrate may comprise both solid and liquid components.

Preferably, the aerosol-forming substrate comprises nicotine. In some preferred embodiments, the aerosol-forming substrate comprises tobacco. For example, the aerosol-forming material may be formed from a sheet of homogenised tobacco.

Alternatively or additionally, the aerosol-forming substrate may comprise a tobacco-free aerosol-forming material. For example, the aerosol-forming material may be a sheet comprising a nicotine salt and an aerosol former.

If the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise one or more of a powder, granules, pellets, fragments, shreds, sticks or sheets containing one or more of herbaceous plant leaves, tobacco ribs, flat tobacco and homogenised tobacco.

Optionally, the solid aerosol-forming substrate may comprise tobacco volatile flavour compounds or non-tobacco volatile flavour compounds which are released upon heating of the solid aerosol-forming substrate. The solid aerosol-forming substrate may also comprise one or more capsules comprising, for example, further tobacco volatile aroma compounds or non-tobacco volatile aroma compounds, and such capsules may be melted during heating of the solid aerosol-forming substrate.

Optionally, the solid aerosol-forming substrate may be disposed on or embedded in a thermally stable carrier. The carrier may take the form of a powder, granule, pellet, flake, strip, stick or sheet. The solid aerosol-forming substrate may be disposed on the surface of the carrier in the form of, for example, a sheet, a foam, a gel or a slurry. The solid aerosol-forming substrate may be placed on the entire surface of the carrier or, alternatively, may be arranged in a pattern so as to provide uneven flavour delivery during use.

In this patent, homogenized tobacco material refers to material formed by agglomerating particulate tobacco.

In this patent, sheet means a laminar element having a width and length substantially greater than its thickness.

In this patent, gathering is used to describe a sheet material that is rolled, folded or compressed or shrunk substantially transverse to the longitudinal axis of the aerosol-generating article.

Preferably, the aerosol-forming substrate comprises a gathered textured sheet of homogenised tobacco material.

In this patent, textured sheeting refers to sheeting that has been curled, embossed, perforated, or otherwise deformed. The aerosol-forming substrate may comprise a gathered textured sheet of homogenised tobacco material comprising a plurality of spaced apart indentations, protrusions, perforations or a combination thereof. Preferably, the aerosol-forming substrate comprises a gathered crimped sheet of homogenised tobacco material. The use of a textured sheet of homogenised tobacco material may advantageously facilitate aggregation of the sheet of homogenised tobacco material to form an aerosol-forming substrate.

In this patent, a crimped sheet means a sheet having a plurality of substantially parallel ridges or corrugations. Preferably, the substantially parallel ridges or corrugations extend along or parallel to the longitudinal axis of the aerosol-generating article when the aerosol-generating article has been assembled. This advantageously facilitates the gathering of the crimped sheet of homogenised tobacco material to form the aerosol-forming substrate. However, it will be appreciated that the crimped sheet of homogenised tobacco material for inclusion in the aerosol-generating article may alternatively or additionally have a plurality of substantially parallel ridges or corrugations that are arranged at an acute or obtuse angle to the longitudinal axis of the aerosol-generating article when the aerosol-generating article has been assembled.

The aerosol-forming substrate may be in the form of a plug comprising an aerosol-forming material defined by paper or other packaging material. Where the aerosol-forming substrate is in the form of a plug, the integral plug, including any wrapper, is considered to be the aerosol-forming substrate.

Preferably, the aerosol-forming substrate comprises a plug comprising a gathered sheet of homogenised tobacco material or other aerosol-forming material surrounded by a wrapper. Preferably, the or each elongate susceptor is located within a plug in direct contact with the aerosol-forming material.

In this patent, aerosol-former is used to describe any suitable known compound or mixture of compounds which, in use, promotes the formation of an aerosol and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article.

Suitable aerosol-forming agents are known in the art and include, but are not limited to: polyhydric alcohols such as propylene glycol, triethylene glycol, 1, 3-butanediol, and glycerin; esters of polyhydric alcohols, such as monoacetin, diacetin, or triacetin; and aliphatic esters of mono-, di-or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Preferred aerosol formers are polyols or mixtures thereof, such as propylene glycol, triethylene glycol, 1, 3-butanediol, and most preferably glycerol.

The aerosol-forming substrate may comprise a single aerosol former. Alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol-forming agents.

Preferably, the aerosol-forming substrate has an aerosol former content of greater than 5% by dry weight. More preferably, the aerosol-forming substrate may have an aerosol former content of between about 5% and about 30% by dry weight. In one embodiment, the aerosol-forming substrate has an aerosol former content of about 20% by dry weight.

Aerosol-forming substrates, including those used to homogenise tobacco sheets in aerosol-generating articles, may be manufactured by processes known in the art, such as roller compaction, pulp and paper processes.

The aerosol-forming article may have the appearance of a conventional cigarette, cigarette-like smoking articles and their specifications are generally denominated in terms of the length of the cigarette, as described below. By "standard", it is generally meant cigarettes of length ranging from 68mm to 75mm, for example from about 68mm to about 72mm, by "short" or "mini", cigarettes of length below 68mm, by "standard out", by cigarettes of length ranging from 75mm to 91mm, for example from about 79mm to about 88mm, by "long" or "long", by cigarettes of length ranging from 91mm to 105mm, for example from about 94mm to about 101mm, and by "ultra long", by cigarettes of length ranging from about 110mm to about 121 mm. In addition, the cigarette items are named according to the cigarette circumference, as described below. The term "standard" means a cigarette having an outer circumference of about 23mm to 25mm, the term "thick" means a cigarette having an outer circumference of 25mm or more, the term "thin" means a cigarette having an outer circumference of about 22mm to 23mm, the term "slender" means a cigarette having an outer circumference of about 19mm to 22mm, the term "ultra-thin" means a cigarette having an outer circumference of about 16mm to 19mm, and the term "fine" means a cigarette having an outer circumference of about 16mm or less. Thus, an over-sized and ultra-fine cigarette has a length of, for example, about 83mm and an outer circumference of about 17 mm. Standard, over-standard types of cigarettes, i.e. those having a length of 75-91 mm and an outer circumference of 23-25 mm, are popular with many customers. The cigarette articles of each specification may be manufactured to have filters of different lengths. In general, a short filter is used for a cigarette article of a short size in both length and outer circumference. Typically, the filter length ranges from 15mm for use with "short" and "standard" sized smoking articles to 30mm for use with "extra long" and "extra fine" sized smoking articles. The length of the tipping paper in the longitudinal direction of the filter-tipped cigarette article is longer than the filter, for example, by 3mm to 10 mm.

Preferably, the aerosol-forming article comprises an aerosol-forming substrate, a support element, an aerosol-cooling element and a mouthpiece. Preferably, the aerosol-forming substrate, the support element, the aerosol-cooling element and the mouthpiece are substantially cylindrical and have substantially comparable outer diameters. For example, having an outer diameter of at least 5 mm. Preferably, it has an outer diameter of between about 5mm and about 12mm, such as between about 5mm and about 10mm or between about 6mm and about 8 mm. In a preferred embodiment, it has an outer diameter of 7.2mm +/-10%.

Preferably, the aerosol-forming substrate may have a length of between about 5mm and about 15mm, for example between about 8mm and about 12 mm. In one embodiment, the aerosol-forming substrate may have a length of about lmm. In a preferred embodiment, the aerosol-forming substrate has a length of about 12 mm.

The support element may be located immediately downstream of the aerosol-forming substrate and may be in close proximity to the aerosol-forming substrate.

The support element may be formed from any suitable material or combination of materials. For example, the support element may be formed of one or more materials selected from the group consisting of: cellulose acetate; a paperboard; crimped paper, such as crimped heat-resistant paper or crimped parchment paper; and polymeric materials such as Low Density Polyethylene (LDPE). In a preferred embodiment, the support element is formed from cellulose acetate.

The support element may comprise a hollow tubular element. In a preferred embodiment, the support element comprises a medium cellulose acetate tube.

The support element may have a length of between about 5mm and about 15 mm. In a preferred embodiment, the support element has a length of about 8 mm.

The aerosol-cooling element may be located downstream of the aerosol-forming substrate, for example the aerosol-cooling element may be located immediately downstream of the support element, and may be in close proximity to the support element. The aerosol-cooling element may also be located between the support element and the mouthpiece, which is located at the most downstream end of the aerosol-generating article.

The aerosol-cooling element may have a total surface area of between about 300 square millimeters per millimeter of length and about 1000 square millimeters per millimeter of length. In a preferred embodiment, the aerosol-cooling element has a total surface area of about 500 square millimetres per millimetre of length.

The aerosol-cooling element may alternatively be referred to as a heat exchanger.

Preferably, the aerosol-cooling element has a low resistance to draw. That is, preferably, the aerosol-cooling element provides a low resistance to the passage of air through the aerosol-generating article. Preferably, the aerosol-cooling element does not substantially affect the resistance to draw of the aerosol-generating article.

The aerosol-cooling element may comprise a plurality of longitudinally extending channels. The plurality of longitudinally extending channels may be defined by a sheet of material that has been subjected to one or more of crimping, pleating, gathering and folding to form the channels. The plurality of longitudinally extending channels may be defined by a single sheet that has been subjected to one or more of crimping, pleating, gathering and folding to form the plurality of channels. Alternatively, the plurality of longitudinally extending channels may be defined by a plurality of sheets that have been subjected to one or more of crimping, pleating, gathering and folding to form the plurality of channels.

In some embodiments, the aerosol-cooling element may comprise a sheet of material selected from the group consisting of: metal foils, polymeric materials and substantially non-porous paper or paperboard. In some embodiments, the aerosol-cooling element may comprise a gathered sheet of a material selected from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), Cellulose Acetate (CA), and aluminum foil. In a preferred embodiment, the aerosol-cooling element comprises a gathered sheet of biodegradable material. For example, a gathered sheet of non-porous paper or a gathered sheet of biodegradable polymeric material (such as polylactic acid).

The aerosol-cooling element may be formed from a gathered sheet of material having a specific surface area of between about 10 square millimeters per milligram to about 100 square millimeters per milligram of weight. In some embodiments, the aerosol-cooling element may be made of a material having a thickness of about 35mm²Aggregated sheets of material of specific surface area/mg are formed.

The aerosol-generating article may comprise a mouthpiece located at the mouth end of the aerosol-generating article. The mouthpiece may be located immediately downstream of and in close proximity to the aerosol-cooling element. The mouthpiece may comprise a filter. The filter may be formed from one or more suitable filter materials. Many such filter materials are known in the art. In one embodiment, the mouthpiece may comprise a filter formed from cellulose acetate tow.

The mouthpiece may have a length of between about 5mm and about 20 mm. In a preferred embodiment, the mouthpiece has a length of about 14 mm. The mouthpiece may have a length of between about 5mm and about 14 mm. In a preferred embodiment, the mouthpiece has a length of about 7 mm.

Elements of the aerosol-generating article (e.g. the aerosol-forming substrate and any other elements of the aerosol-generating article, such as the support element, the aerosol-cooling element and the mouthpiece) are surrounded by an outer wrapper. The outer wrapper is formed of any suitable material or combination of materials. Preferably, the outer wrapper is cigarette paper.

Aerosol-generating devices are used to describe devices that interact with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol. Preferably, the aerosol-generating device is a smoking device that interacts with an aerosol-generating substrate of an aerosol-generating article to generate an aerosol that is directly inhalable into a user's lungs through the user's mouth. The aerosol-generating device may be a holder for a smoking article.

A susceptor refers to a material that can convert electromagnetic energy into heat. When located in a fluctuating electromagnetic field, eddy currents induced in the susceptor cause heating of the susceptor. When the elongated susceptor is positioned in thermal contact with the aerosol-forming substrate, the aerosol-forming substrate is heated by the susceptor.

The aerosol-generating article is designed to engage with an electrically operated aerosol-generating device comprising an inductive heating source. An inductive heating source or inductor generates a fluctuating electromagnetic field for heating a susceptor located within the fluctuating electromagnetic field. In use, the aerosol-generating article is engaged with the aerosol-generating device such that the susceptor is located within the fluctuating electromagnetic field generated by the inductor.

The susceptor has a length dimension that is greater than its width dimension or its thickness dimension, for example greater than twice its width dimension or its thickness dimension. Thus the susceptor may be described as an elongated susceptor. The susceptor may be arranged substantially longitudinally within the aerosol-generating substrate. This means that the length dimension of the elongated susceptor is arranged approximately parallel to the longitudinal direction of the aerosol-generating substrate, for example within plus or minus 10 degrees of parallel to the longitudinal direction of the aerosol-generating substrate. In a preferred embodiment, the elongate susceptor may be located at a radially central position within the aerosol-generating substrate and extend along a longitudinal axis of the aerosol-generating substrate.

The susceptor is preferably needle-shaped, bar-shaped or leaf-shaped. Preferably, the susceptor has a length of between 5mm and 15mm, for example between 6mm and 12mm or between 8mm and 10 mm. Preferably, the elongate susceptor has substantially the same length as the aerosol-forming substrate. Preferably, the susceptor may have a width of 1mm to 5mm and a thickness of between 0.01mm to 2mm, for example a thickness of 0.5mm to 2 mm. Preferred embodiments may have a thickness of between 10 microns and 500 microns, more preferably between 10 microns and 100 microns. If the susceptor has a constant cross-section, for example a circular cross-section, it has a preferred width or diameter of 1mm to 5 mm.

The susceptor may be made of any material which is capable of being inductively heated to a temperature sufficient for the aerosol-forming substrate to generate an aerosol. Preferred susceptors include metals or carbon. Preferred susceptors may comprise ferromagnetic materials such as ferrite, ferromagnetic steel or stainless steel. Suitable susceptors may be or may include aluminum. Preferred susceptors may be made from 400 series stainless steel, such as grade 410, grade 420 or grade 430 stainless steel. Different materials will dissipate different amounts of energy when placed in electromagnetic fields having similar frequency and field strength values. Thus, parameters of the susceptor, such as material type, length, width and thickness, may be varied within a known electromagnetic field to provide the required energy consumption.

It is possible to heat the preferred sensor to temperatures in excess of 250 degrees celsius. Suitable susceptors may include non-metallic cores having a metal layer disposed on the non-metallic core, such as metal traces formed on the surface of a ceramic core.

The susceptor may have an outer protective layer, such as a ceramic or glass protective layer, encapsulating the elongated susceptor, thereby forming a complete heating body. The susceptor may include a protective coating formed of glass, ceramic, or inert metal formed on a core of susceptor material.

The susceptor is arranged in thermal contact with the aerosol-forming substrate. Thus, when the susceptor is heated, the aerosol-forming substrate is heated and an aerosol is formed. In one embodiment, the heating body comprising the susceptor is inserted into the aerosol-forming substrate, and the aerosol-generating device may comprise a single or multiple elongate heating bodies. In another embodiment, the aerosol-generating substrate may comprise a susceptor, alternatively the aerosol-generating substrate may comprise a plurality of susceptors, the morphology of which may be elongated, granular, mesh, radial, tubular, hourglass, spiral, or the like.

The aerosol-generating device is capable of generating a fluctuating electromagnetic field of between about 1MHz and 30MHz, such as between 2MHz and 10MHz, such as between 5MHz and 7MHz, by means of the induction coil of the induction transmitter.

Preferably, the aerosol-generating device is capable of generating a fluctuating electromagnetic field having a field strength (H-field) of between 1kA/m and 5kA/m, such as between 2kA/m and 3kA/m, such as about 2.5 kA/m.

The induction coil material should be selected from materials with good conductive effect, such as metal and the like; in addition, in this patent, the material of the induction coil should have good elastic deformability, and can be made of spring steel, gold, silver, and other metals.

The movable coil support and the fixed coil support of the induction coil can be connected with the induction coil body in the modes of integral forming, welding, clamping and the like. The displacement of the movable coil support can be realized by manual operation, motor transmission and the like.

The aerosol-generating device is a portable or handheld aerosol-generating device that a user can comfortably hold between the fingers of a single hand. The aerosol-generating device may be substantially cylindrical in shape. The aerosol-generating device may have a length of between about 70 mm and about 120 mm.

The power source may be any suitable power source, for example a dc voltage source, such as a battery. In one embodiment, the power source is a lithium ion battery. Alternatively, the power source may be a nickel metal hydride battery, a nickel cadmium battery, or a lithium based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery.

The control element may be a simple switch. Alternatively, the control element may be a circuit and may include one or more microprocessors or microcontrollers.

An aerosol-generating system may comprise an aerosol-generating device configured with a corresponding number of heating chambers housing aerosol-generating articles, and one or more aerosol-generating articles.

The utility model provides a brand new heating power adjusting mode of the induction heating aerosol generating device, thereby reducing the requirements on the aspects of circuit design and software programming, and adjusting and controlling the heating position or the heating temperature spatial distribution in use.

Drawings

The foregoing summary, as well as the following detailed description of the patent, will be better understood when read in conjunction with the appended drawings. It is to be noted that the figures are only intended as examples of the claimed solution.

Figure 1 is a cross-sectional view of an aerosol-generating device in one embodiment;

FIG. 2 is a schematic diagram of a variation in the coil turn distribution in the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of a variation in the distribution of coil turns in another embodiment;

FIG. 4 is a schematic diagram of a variation in the distribution of coil turns in another embodiment;

FIG. 5 is a schematic diagram of an initial state of a coil in one embodiment;

FIG. 6 is a schematic diagram of a variation in the coil turn distribution in the embodiment of FIG. 5;

figure 7 is a cross-sectional view of an aerosol-generating device according to an embodiment;

FIG. 8 is a schematic diagram of a variation in the coil turn distribution in the embodiment of FIG. 7;

figure 9 is a cross-sectional view of an aerosol-generating device according to an embodiment;

FIG. 10 is a schematic diagram of the variation in the coil turns distribution in the embodiment of FIG. 9;

figure 11 is a cross-sectional view of an aerosol-generating device according to an embodiment;

fig. 12 is a schematic diagram of a variation of the coil turn distribution in the embodiment of fig. 11.

Wherein the reference numerals are as follows:

an induction coil: 101. 201, 301, 401, 501, 601, 701;

a susceptor: 102. 502, 602, 702

An appliance main body: 103. 503, 603, 703

Heating the chamber: 104. 504, 604, 704

The movable coil support: 105. 205, 305, 405, 505, 605, 705

Fixing a coil support: 106. 206, 306A, 306B, 406, 506, 606, 706

Detailed Description

The detailed features and advantages of the patent are described in detail below in the detailed description, which is sufficient for anyone skilled in the art to understand the technical content of the patent and to implement the patent, and the related objects and advantages of the patent can be easily understood by those skilled in the art from the description, the claims and the drawings disclosed in the specification.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the patent.

To make the objects, technical solutions and advantages of the present patent more clear, embodiments of the present patent will be described in further detail below with reference to the accompanying drawings.

An aerosol-generating device in one embodiment as shown in fig. 1 and 2 comprises a power source, a heating chamber 104, an induction-heatable body, an induction emitter, and a controller. Wherein the power supply and controller are provided in the appliance body 103 of the aerosol-generating device. The heating chamber 104 is for receiving, in operation, an aerosol-generating article. The induction transmitter comprises an induction coil 101 having a magnetic field axis, the heating body comprises a susceptor 102, the induction coil 101 is arranged to surround a heating chamber 104 and at least a portion of the susceptor 102, and a power supply is connected to the induction coil 101 and configured to provide a high frequency current to the induction coil under control of a controller. In operation, the aerosol-generating article is inserted into the heating chamber 104, the heating body is simultaneously inserted into the aerosol-generating article, the power supply provides high frequency current induction to the induction coil 101, thereby generating an induced electric field in the susceptor 102 of the heating body and forming an induced current, and the heating body heats the aerosol-generating article after it heats up.

In operation, the induction coil 101 may be displaced relative to the heating chamber 104. One end of the induction coil 101 is connected to the movable coil support 105, and the other end is connected to the fixed coil support 106. The movable coil support 105 and the fixed coil support 106 may be connected to the main body of the induction coil 101 by means of integral molding, welding, clamping, etc., and the displacement of the movable coil support 106 may be achieved by means of manual operation, motor transmission, etc. In one embodiment, a sliding slot having a plurality of slots is provided in the housing of the aerosol-generating device, and the handle of the movable coil support 106 extends radially out of the sliding slot, and the consumer can move the handle and secure it in one of the slots. In another embodiment, the motor drives the movable coil support 106 to move through a transmission mechanism, and when the motor stops, the movable coil support 106 also stops at the corresponding position. The stationary coil support 106 may be fixed to the housing of the aerosol-generating device by way of an integral molding, a snap fit, a weld, a screw fixation, or the like.

When movable coil support 105 is brought into proximity with stationary coil support 106 as shown in fig. 1, spring-like induction coil 101 is compressed along the magnetic field axis such that there are N1 turns of the coil within the magnetic field axis of susceptor 102; when movable coil support 105 is moved away from stationary coil support 106 as shown in fig. 2, spring-like induction coil 101 is stretched along the magnetic field axis such that there are N2 turns of the coil within the magnetic field axis of susceptor 102. When the induction coil 101 obtains the same high-frequency current, the magnetic flux received by the susceptor 102 is the same, but since N1 is greater than N2, the induced electromotive force generated by the susceptor 102 in the state of fig. 1 is greater than that in the state of fig. 2, and thus the heating power of the heating element in the state of fig. 1 is greater than that in the state of fig. 2. Therefore, the stretching or compression of the induction coil 101 generated by the movement of the movable coil support 105 realizes the change of the heating power of the appliance on the premise of not changing the circuit design, and can be used for mode conversion of rapid preheating, normal heating, heat preservation and the like in a time sequence.

In another embodiment shown in fig. 3, the induction coil 201 is connected to a movable coil support 205 at the middle and a fixed coil support 206 at one end. When the movable coil support 205 moves closer to or farther from the fixed coil support 206 as indicated by the arrow, the lower half of the spring-like induction coil 201 is compressed or stretched along the magnetic field axis, but the lower half remains stationary. The local stretching or compression of the induction coil 201 generated by the movement of the movable coil support 205 realizes the change of the distribution of the heating power of the appliance on the premise of not changing the circuit design, and can be used for the sequential segmented heating.

In another embodiment shown in fig. 4, the induction coil 301 has a movable coil support 305 attached to the middle and fixed coil supports 306A and 306B attached to the ends. When the movable coil support 305 moves closer to or further from the fixed coil support 306 as indicated by the arrow, the lower half of the spring-like induction coil 201 is compressed or stretched along the magnetic field axis and the upper half is stretched or compressed along the magnetic field axis. The local stretching or compression of the induction coil 301, which is generated by the movement of the movable coil support 305, realizes the change of the distribution of the heating power of the appliance without changing the circuit design, and can be used for the time-sequence segmented heating.

In another embodiment, as shown in fig. 5 and 6, the induction coil 401 is connected at one end to a movable coil support 405 and at the other end to a fixed coil support 406. When the movable coil support 405 twists the induction coil 401 against the winding direction of the induction coil 401 as shown in fig. 6, the number of turns of the spring-like induction coil 401 decreases; when the movable coil support 405 twists the induction coil 401 in the reverse direction of the winding direction of the induction coil 401, the number of turns of the spring-like induction coil 401 increases. The induction coil 401 twisted by the movable coil support 405 realizes the change of the heating power of the appliance on the premise of not changing the circuit design, and can be used for mode conversion of rapid preheating, normal heating, heat preservation and the like in time sequence.

In another embodiment, the middle of the induction coil is connected with the movable coil bracket, and one end of the induction coil is connected with the fixed coil bracket. In another embodiment, the middle of the induction coil is connected with a movable coil bracket, and two ends of the induction coil are respectively connected with a fixed coil bracket. The number of local turns of the induction coil can be increased or reduced through the induction coil twisted by the movable coil support, the distribution of heating power of the appliance is changed on the premise of not changing the circuit design, and the induction coil can be used for sequential segmented heating.

An aerosol-generating device in one embodiment as shown in figures 7 and 8 comprises a power supply, a heating chamber 504, an induction-heatable body, an induction emitter and a controller. Wherein the power supply and controller are provided in the appliance body 503 of the aerosol-generating device. The heating chamber 504 is for receiving, in operation, an aerosol-generating article. The induction transmitter comprises an induction coil 501 having a magnetic field axis, the heating body comprises a susceptor 502, the induction coil 501 is arranged to enclose a heating chamber 504 and at least a portion of the susceptor 502, and a power supply is connected to the induction coil 501 and configured to provide a high frequency current to the induction coil under the control of a controller. In operation, the aerosol-generating article is inserted into the heating chamber 504, the susceptor 502 is disposed around the heating chamber 504, the susceptor 502 surrounds at least a portion of the exterior of the aerosol-generating article, and the power supply provides high frequency current induction to the induction coil 501, thereby generating an induced electric field in the susceptor 502 of the heating body and creating an induced current that heats the aerosol-generating article after heating by the heating body.

In operation, the induction coil 501 may be displaced relative to the heating chamber 504.

One end of the induction coil 501 is connected to the movable coil support 505, and the other end is connected to the fixed coil support 506. When the movable coil support 505 is brought close to the stationary coil support 506 as shown in fig. 7, the spring-like induction coil 501 is compressed along the magnetic field axis such that there are N1 turns of the coil within the magnetic field axis of the susceptor 502; when the moving coil support 505 is moved away from the stationary coil support 506 as shown in fig. 8, the spring-like induction coil 501 is stretched along the magnetic field axis such that there are N2 turns of the coil within the magnetic field axis of the susceptor 502. When the induction coil 501 obtains the same high-frequency current, the magnetic flux received by the susceptor 502 is the same, but since N1 is greater than N2, the induced electromotive force generated by the susceptor 502 in the state of fig. 7 is greater than that in the state of fig. 8, and thus the heating power of the heating element in the state of fig. 7 is greater than that in the state of fig. 8. Therefore, the stretching or compressing of the induction coil 501 generated by the movement of the movable coil support 505 realizes the change of the heating power of the appliance on the premise of not changing the circuit design, and can be used for mode conversion such as rapid preheating, normal heating, heat preservation and the like in a time sequence.

An aerosol-generating device in one embodiment, as shown in fig. 9 and 10, includes a power source, a heating chamber 604, an induction-heatable body, an induction emitter, and a controller. Wherein the power supply and controller are provided in the appliance body 603 of the aerosol-generating device. The heating chamber 604 is for, in operation, receiving an aerosol-generating article having a susceptor 602 therein as a heating body. The induction transmitter comprises an induction coil 601 having a magnetic field axis, the induction coil 601 being arranged to enclose the heating chamber 604 and at least a portion of the susceptor 602, a power supply being connected to the induction coil 601 and configured to provide a high frequency current to the induction coil under the control of the controller. In operation, an aerosol-generating article having a susceptor 602 disposed therein is inserted into the heating chamber 604, and a power supply provides high frequency current induction to the induction coil 601, thereby generating an induced electric field in the susceptor 602 as a heating body and inducing an electric current, which heats the aerosol-generating article.

In operation, the induction coil 601 may be displaced relative to the heating chamber 604.

One end of the induction coil 601 is connected to the movable coil support 605, and the other end is connected to the fixed coil support 606. When movable coil support 605 is brought close to stationary coil support 606 as shown in fig. 9, spring-like inductive coil 601 is compressed along the magnetic field axis such that there are N1 turns of the coil within the magnetic field axis of susceptor 602; when movable coil support 605 is moved away from stationary coil support 606 as shown in fig. 10, spring-like inductive coil 601 is stretched along the magnetic field axis such that there are N2 turns of the coil within the magnetic field axis of susceptor 602. When the same high-frequency current is obtained by the induction coil 601, the magnetic flux received by the susceptor 602 is the same, but since N1 is greater than N2, the induced electromotive force generated by the susceptor 602 is greater in the state of fig. 9 than in the state of fig. 10, and thus the heating power of the heating element is greater in the state of fig. 9 than in the state of fig. 10. Therefore, the stretching or compression of the induction coil 601 generated by the movement of the movable coil support 605 realizes the change of the heating power of the appliance on the premise of not changing the circuit design, and can be used for mode conversion of rapid preheating, normal heating, heat preservation and the like in a time sequence.

An aerosol-generating device in one embodiment, as shown in fig. 11 and 12, comprises a power source, a heating chamber 704, an induction-heatable body, an induction emitter, and a controller. Wherein the power supply and controller are provided in the appliance body 703 of the aerosol-generating device. The heating chamber 704 is for use in operation to house an aerosol-generating article having a susceptor 702 therein as a heating body. The induction transmitter comprises an induction coil 701 having a magnetic field axis, the induction coil 701 being arranged to surround the heating chamber 704 and at least a portion of the susceptor 702, a power supply connected to the induction coil 701 and configured to provide a high frequency current to the induction coil under control of the controller. In operation, an aerosol-generating article having a susceptor 702 built therein is inserted into the heating chamber 704, and a power supply provides high frequency current induction to the induction coil 701, thereby generating an induced electric field and inducing an induced current in the susceptor 702 as a heating body, which heats the aerosol-generating article.

In operation, the induction coil 701 may be displaced relative to the heating chamber 704.

One end of the induction coil 701 is connected to the movable coil support 705, and the other end is connected to the fixed coil support 706. When the movable coil support 705 is brought close to the stationary coil support 706 as shown in fig. 11, the spring-like induction coil 701 is compressed along the magnetic field axis such that only part of the susceptor 702 is within the magnetic field axis of the induction coil 701, constituting a local heating zone; when the movable coil support 705 is moved away from the stationary coil support 606 as shown in fig. 12, the spring-like induction coil 601 is stretched along the magnetic field axis so that the entire susceptor 702 is within the magnetic field axis of the induction coil 701, constituting an overall heating zone. The stretching or compressing of the induction coil 701 generated by the movement of the movable coil support 705 realizes the change of the heating position of the appliance and the distribution of the heating power on the premise of not changing the circuit design, and can be used for the time-sequence segmented heating.

The terms and expressions which have been employed herein are used as terms of description and not of limitation. The use of such terms and expressions is not intended to exclude any equivalents of the features shown and described (or portions thereof), and it is recognized that various modifications may be made within the scope of the claims. Other modifications, variations, and alternatives are also possible. Accordingly, the claims should be looked to in order to cover all such equivalents.

Also, it should be noted that although the patent has been described with reference to the present specific embodiments, it should be understood by those skilled in the art that the above embodiments are only for illustrating the patent and that various equivalent changes or substitutions can be made without departing from the spirit of the patent, therefore, the changes and modifications of the above embodiments within the scope of the essential spirit of the patent will fall within the scope of the claims of the patent.

Claims (12)

1. An inductive emitter for an aerosol-generating device comprising a heating chamber for receiving an aerosol-generating article when in operation, a susceptor for receiving energy emitted by the inductive emitter being present in the heating chamber when in operation, characterized in that the inductive emitter comprises an induction coil having a magnetic field axis, the induction coil being arranged to surround the heating chamber and at least a portion of the susceptor, the induction coil being displaceable relative to the heating chamber when in operation.

2. The inductive transmitter of claim 1 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by being displaced relative to the heating chamber.

3. The inductive transmitter of claim 2 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by compressing or stretching at least a portion of the inductive coil.

4. The inductive transmitter of claim 3 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by compressing or stretching all or part of the inductive coil.

5. The inductive transmitter of claim 3 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by compressing one portion of the inductive coil and stretching another portion of the inductive coil.

6. The inductive transmitter of claim 2 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by twisting at least a portion of the inductive coil.

7. The inductive transmitter of claim 6 wherein the inductive coil has a distribution of turns along the magnetic field axis that is varied by twisting all or part of the inductive coil in or against a winding direction.

8. The inductive transmitter of claim 6 wherein the inductive coil changes a distribution of turns of the inductive coil along the magnetic field axis by twisting one portion of the inductive coil in a winding direction and twisting another portion of the inductive coil against the winding direction.

9. An aerosol-generating device comprising an inductive transmitter according to any one of claims 1 to 8, the aerosol-generating device further comprising: a power supply connected to the induction coil and configured to provide high frequency current to the induction coil under control of the controller, a heating chamber for receiving, in operation, an aerosol-generating article, and a controller within which, in operation, there is a susceptor for receiving energy emitted by the inductive emitter.

10. An aerosol-generating system comprising the aerosol-generating device of claim 9 and the aerosol-generating article, wherein the aerosol-generating device contains the susceptor.

11. An aerosol-generating system comprising an aerosol-generating device according to claim 9 and the aerosol-generating article, wherein the susceptor is disposed around the heating chamber, the susceptor surrounding at least a portion of the aerosol-generating article in use.

12. An aerosol-generating system comprising an aerosol-generating device according to claim 9 and the aerosol-generating article, wherein the susceptor is disposed inside the heating chamber, the susceptor being at least partially inserted into the aerosol-generating article in use.

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