CN217184847U - Gas mist generating device and heater for gas mist generating device - Google Patents
Gas mist generating device and heater for gas mist generating device Download PDFInfo
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- CN217184847U CN217184847U CN202123236287.2U CN202123236287U CN217184847U CN 217184847 U CN217184847 U CN 217184847U CN 202123236287 U CN202123236287 U CN 202123236287U CN 217184847 U CN217184847 U CN 217184847U
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Abstract
An aerosol-generating device and a heater for an aerosol-generating device; wherein the aerosol-generating device comprises: a chamber for receiving an aerosol-generating article; and a heater for insertion into the aerosol-generating article to heat the aerosol-generating article; the heater has a free front end and a distal end facing away from the free front end; wherein the heater includes: a base extending along the length of the heater between a free front end and a distal end; a resistive heating coil surrounding the substrate; and a protective coating surrounding at least a portion of the resistive heating coil and holding the resistive heating coil outside the substrate. In the above-described aerosol-generating device, the protective coating layer is formed on the outside of the substrate surrounding the resistance heating coil, and the resistance heating coil is restricted, surrounded, or fixed by the protective coating layer, and the resistance heating coil is held outside the substrate, thereby preventing the resistance heating coil from coming loose or moving from the substrate.
Description
Technical Field
The embodiment of the application relates to the technical field of heating non-combustion smoking set, in particular to an aerosol generating device and a heater for the aerosol generating device.
Background
Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release compounds without burning.
An example of such a product is a heating device that releases a compound by heating rather than burning the material. For example, the material may be tobacco or other non-tobacco products, which may or may not include nicotine. In the known art, CN202010054217.6 patent proposes heating tobacco products with a heater enclosing a spiral heating wire inside an outer sleeve to generate aerosol.
SUMMERY OF THE UTILITY MODEL
An embodiment of the present application provides an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; the method comprises the following steps:
a chamber for receiving an aerosol-generating article; and
a heater extending at least partially within the chamber for insertion into an aerosol-generating article to heat the aerosol-generating article; the heater has a free front end located within the chamber and a distal end facing away from the free front end; wherein the heater comprises:
a base extending along a length of the heater between the free leading end and the terminal end;
a resistive heating coil surrounding at least a portion of the substrate; and
a protective coating surrounding at least a portion of the resistive heating coil and holding the resistive heating coil outside of the substrate.
In a preferred implementation, the protective coating at least partially defines an outer surface of the heater.
In a preferred implementation, the protective coating comprises glaze or diamond.
In a preferred embodiment, the protective coating has a thickness of 0.001 to 1 mm.
In a preferred implementation, the base has a first end proximate the free leading end, and a second end proximate the terminal end;
the heater further comprises:
a first wire and a second wire for supplying power to the resistive heating coil; the first wire extends from the second end of the substrate to the first end and is conductively connected to one end of the resistive heating coil proximate the first end; the second conductive pin is conductively connected with the other end of the resistive heating coil near the second end.
In a preferred implementation, the substrate is tubular in shape extending along the length of the heater.
In a preferred embodiment, the first conductor extends at least partially within the base body.
In a preferred implementation, the cross-section of the wire material of the resistive heating coil has a first dimension extending in an axial direction and a second dimension extending in a radial direction; the first size is greater than the second size.
In a preferred implementation, the heater further comprises:
an end element adjacent to and defining a free front end of the heater; the end element is arranged to abut against the first end of the base body to form a stop.
In a preferred implementation, the end element is at least partially a conductor; the first wire is indirectly in electrically conductive connection with the resistive heating coil by being connected to the end element.
In a preferred implementation, the end element extends at least partially into the base body from a first end of the base body.
In a preferred implementation, the protective coating comprises at least two coatings arranged in succession from the inside towards the outside in a radial direction of the heater.
In a preferred embodiment, the protective coating comprises at least a first coating and a second coating arranged in sequence from the inside to the outside; the second coating layer has a thermal conductivity greater than the thermal conductivity of the first coating layer.
In a preferred implementation, the protective coating is configured to surround both the resistive heating coil and the substrate.
Yet another implementation of the present application also presents an aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; the method comprises the following steps:
a heater extending at least partially within the chamber for insertion into an aerosol-generating article to heat the aerosol-generating article; the heater includes a free front end located within the chamber and a distal end facing away from the free front end, and:
a base configured in a tubular shape extending in a length direction of the heater and having a first end near the free leading end and a second end near the tip end;
a resistive heating element coupled to an outer side of the substrate and surrounding at least a portion of the substrate;
an end element adjacent to and defining a free front end of the heater; the end element extends at least partially from the first end of the base body into the tubular hollow of the base body.
Yet another implementation of the present application also provides a heater for an aerosol-generating device, the heater configured as a pin or needle or rod and having free leading and trailing ends that are opposite along a length; the device comprises:
a base extending along a length of the heater between the free leading end and the terminal end;
a resistive heating coil surrounding at least a portion of the substrate;
a protective coating surrounding at least a portion of the resistive heating coil and holding the resistive heating coil outside of the substrate.
In the above aerosol-generating device, the protective coating layer is formed on the outside of the base body surrounding the resistance heating coil, and the resistance heating coil is restrained, surrounded, or fixed by the protective coating layer, and further the resistance heating coil is held on the outside of the base body, so that the resistance heating coil is prevented from being released or moved from the base body.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Figure 1 is a schematic diagram of an aerosol-generating device provided by an embodiment;
FIG. 2 is a schematic view of one embodiment of the heater of FIG. 1;
FIG. 3 is an exploded view of the parts of FIG. 2 shown unassembled;
FIG. 4 is a schematic view of a first wire and a second wire connected to a resistive heating coil in yet another embodiment;
FIG. 5 is a schematic view of yet another embodiment of the heater of FIG. 1;
FIG. 6 is a schematic view of the end member of FIG. 5;
FIG. 7 is a schematic view of yet another embodiment of the heater of FIG. 1;
fig. 8 is a schematic view of a resistance heating coil of yet another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and detailed description.
An embodiment of the present application provides an aerosol-generating device, the configuration of which can be seen in fig. 1, including:
a chamber having an opening 40; in use, the aerosol-generating article a is removably receivable within the chamber through the opening 40 of the chamber;
a heater 30 extending at least partially within the chamber, heating being inserted into the aerosol-generating article a when the aerosol-generating article a is received within the chamber, such that the aerosol-generating article a releases a plurality of volatile compounds, and the volatile compounds are formed only by the heating process;
the battery cell 10 is used for supplying power;
a circuit 20 for conducting current between the cell 10 and the heater 30.
In a preferred embodiment, the heater 30 is generally in the shape of a pin or needle or rod or column, which in turn is advantageous for insertion into the aerosol-generating article a; meanwhile, the heater 30 may have a length of about 12 to 20 mm and an outer diameter of about 2 to 4 mm.
Further in alternative implementations, the aerosol-generating article a preferably employs a tobacco-containing material that releases volatile compounds from the substrate upon heating; or it may be a non-tobacco material that is suitable for electrically heated smoking after heating. The aerosol-generating article a preferably employs a solid substrate, which may comprise one or more of a powder, granules, shredded strips, strips or flakes of one or more of vanilla leaves, tobacco leaves, homogenised tobacco, expanded tobacco; alternatively, the solid substrate may contain additional tobacco or non-tobacco volatile flavour compounds to be released when the substrate is heated.
In practice, the heater 30 may generally include a resistive heating element, as well as an auxiliary substrate to assist in the fixed preparation of the resistive heating element, and the like. For example, in some implementations, the resistive heating element is in the shape or form of a helical coil. Or in yet other implementations, the resistive heating elements are in the form of electrically conductive traces bonded to the substrate. Or in yet other implementations, the resistive heating element is in the shape of a substrate of a sheet.
Further fig. 2 and 3 show schematic views of an embodiment of a heater 30; the embodied heater 30 has a front end 310 and a rear end 320 that are opposite along the length. Wherein the front end 310 is a free end exposed within the cavity and configured to be a tapered tip, which is advantageous for insertion into the aerosol-generating article a; the tip 320 is the end that is intended to be secured and mounted within the aerosol-generating device by gripping the heater 30 near the tip 320 so that the heater 30 fits stably within the device. Specifically, the configuration of the heater 30 includes:
the base 31 is configured in an elongated rod-like or tubular shape extending between the front end 310 and the tip end 320 in the length direction of the heater 30. In operation, the substrate 31 serves to support and retain the resistive heating element 32. In a preferred implementation, the substrate 31 is rigid. And, in this implementation, the substrate 31 and the resistive heating element 32 are insulated from each other. In an alternative implementation, the substrate 31 comprises a ceramic such as a zirconia ceramic or alumina ceramic, glass, surface insulated metal, or the like.
In a preferred embodiment, the above resistance heating element 32 is a resistance heating coil, and is prepared by winding the resistance coil on the substrate 31 by a winding device, which is very convenient for the modular and mass production of the heater 30.
In an alternative embodiment, the resistive heating element 32 is made of a metallic material, a metallic alloy, graphite, carbon, a conductive ceramic or other composite of a ceramic material and a metallic material with appropriate resistance. Wherein the suitable metal or alloy material comprises at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium-aluminum alloy, titanium alloy, iron-manganese-aluminum based alloy, stainless steel, or the like.
In some alternative implementations, the resistive heating element 32 is a conventional circular cross-section coiled resistive heating coil of wire material. Or in some preferred implementations, the resistive heating element 32 is a resistive heating coil wound from a wire material having a flattened or rectangular cross-section, such as the resistive heating element 32d shown in fig. 8; specifically, the extension dimension of the wire material of the resistance heating element 32d in the axial direction is larger than that in the radial direction, so that the resistance heating element 32d of the spiral coil configuration is flattened in the axial direction; for the transfer of heat. In one specific implementation, the wire material of the resistance heating coil has an extension dimension of 0.25 to 2mm in the axial direction and an extension dimension of 0.05 to 0.2mm in the radial direction.
In some alternative implementations, the resistivity of the wire material of the resistive heating element 32 is between 0.5 and 1.7 Ω mm 2 The TCR coefficient (temperature coefficient of resistance) is 800-3800 ppm/DEG C. And, resistance heatingThe resistance of the element 32 is 0.5-3 ohm; the temperature of the resistive heating element 32 can be obtained by sampling or measuring the resistance of the resistive heating element 32 during use.
In some implementations, the resistance heating element 32 of the spiral coil configuration has an inner diameter between 1.6mm and 2.6mm and a length between 8mm and 45 mm.
In some embodiments, the rod-shaped or tubular substrate 31 has an outer diameter of about 1 to 3mm, and an outer diameter of about 0.3 to 2 mm; and the base 31 has a length of about 10 to 50 mm. In a further embodiment, the substrate 31 has an outer diameter of about 1.6 to 2.0mm and an inner diameter of about 0.4 to 1.2 mm; and the substrate 31 is an alumina ceramic tube with a length of 14-25 mm.
As further shown in fig. 2 and 3, the heater 30 further includes:
a first conductive wire 351 and a second conductive wire 352 are connected to both ends of the resistance heating element 32 to supply power to the resistance heating element 32. In a typical implementation, the first conductive line 351 and the second conductive line 352 are both made of a metal or an alloy material with high conductivity and low resistance; in some specific implementations, the first and second wires 351 and 352 are copper, gold, or silver, platinum, aluminum, nickel, etc., or silver plated nickel, etc.
In the embodiment of fig. 2 and 3, the first conductive lead 351 is electrically connected to the upper end of the resistance heating element 32 near the front end 310 by welding or the like; the second wire 352 is electrically connected to the lower end of the resistance heating element 32 near the end 320 by soldering or the like. Wherein:
the base body 31 has a wire guide hole 314 penetrating from the outer surface into the hollow near the front end 310; the first conductive wire 351 extends from the end 320 to a position near the front end 310 in the hollow of the substrate 31, and is connected to the upper end of the resistance heating element 32 after passing through the wire hole 314. And a second wire 352 is connected to the lower end of the resistance heating element 32 outside the substrate 31.
As further shown in fig. 2 and 3, to taper the front end 310 of the heater 30 to facilitate insertion of the aerosol-generating article a; the heater 30 further includes:
an end element 33 adjacent to and defining a front end 310 of the heater 30. In a particular configuration, the end element 33 comprises a section 331 and a section 332 arranged in succession along the length direction; in implementation, section 331 is conical in shape with decreasing outer diameter in a direction proximal to front end 310 and defines front end 310 by a conical tip; section 332 is cylindrical with a substantially constant outer diameter. And, the outer diameter of the section 332 is smaller than the maximum outer diameter of the section 331, and a step 333 is formed therebetween.
During assembly, the section 332 of the end element 33 projects from the end of the base body 31 close to the front end 310 into the tubular hollow of the base body 31; and the end of the base 31 adjacent the front end 310 abuts the step 333 and thereby provides a stop for the end member 33. Of course, in a preferred embodiment, the segment 332 is an interference or interference fit with the base 31.
In some implementations, the end member 33 has an overall length of between 2-40 mm; in the embodiment shown in FIGS. 2 and 3, the end element 33 has an overall length of 3 to 6 mm. And the length of the section 331 of the end element 33 is between 1 and 4mm, preferably between 1.5 and 2.5 mm; the section 331 of the end element 33 has a maximum outer diameter of 2.0-3.0 mm. The length of the section 332 of the end element 33 is between 2 and 4mm, preferably 3 mm; and section 332 of end member 33 has an outer diameter of 1.2 mm.
In this embodiment, the end element 33 is made of rigid material; such as ceramics, metals, etc.
As further shown in fig. 2, the heater 30 further includes:
the protective coating 34 is formed on the resistance heating element 32 and the substrate 31 by spraying or dip coating, deposition, or the like. After the protective coating 34 is formed, the resistance heating element 32 is restrained or surrounded or secured by the protective coating 34 and is retained outside the substrate 31 to prevent the resistance heating element 32 from loosening or moving. The protective coating 34 is a single coating such as a glaze layer, a diamond layer, or the like; the thickness of the protective coating 34 is 0.001 to 1mm, preferably 0.01 to 0.3 mm. The protective coating 34 serves to coat the exposed surfaces of the resistive heating element 32 and the substrate 31 to smooth the heater 30 to prevent deposition of residues or debris or aerosol condensate originating from the aerosol-generating article a on the surface of the substrate 31 and/or resistive heating element 32. After preparation, the outer surface of the heater 30 is collectively defined by the protective coating 34, and the section 331 of the end element 33. The heat of the resistive heating element 32 is transferred directly through the protective coating 34 to the outer surface of the heater 30 with a faster heat transfer efficiency.
Further in still other implementations, the protective coating 34 includes more than two or more coatings. For example, the protective coating 34 includes a first coating layer and a second coating layer formed in this order from the inside to the outside. Wherein the first coating is one of a glaze, diamond, or diamond-like coating that is insulated from the resistive heating element 32; the second coating, which may be one of a metal, metal alloy coating or diamond and diamond-like coating, transfers heat from the resistive heating element 32 to the surface of the heater 30 relatively more quickly to heat the aerosol-generating article a. Based on the above, the first coating provides cladding and insulation to the resistive heating element 32, and the second coating has a thermal conductivity greater than that of the first coating, which is advantageous for rapid heat transfer and heat soak.
And, further in a more preferred implementation, the protective coating 34 may also have an anti-adhesive coating formed over the second coating of metal, metal alloy material to prevent deposition of aerosol-derived organics or aerosol condensate on the surface of the heater 30; in practice, a release coating such as a smoother surface aqueous nanoceramic coating, or a low surface free energy organic coating, is applied to promote release of the heater 30 surface.
And, the above protective coating 34 is obtained by sintering and curing after forming a raw material of glaze, diamond, or diamond-like coating on the resistance heating element 32.
In yet another alternative embodiment, as shown in FIG. 4, the first conductive wire 351a extends from the end of the body 31 near the distal end 320 to the other end and then radially across the wall of the body 31 to connect to the end of the resistive heating element 32.
Further fig. 5 and 6 show schematic views of a heater 30b of yet another embodiment, the heater 30b of this embodiment comprising:
a base 31b substantially in the shape of a tube extending between a front end 310b and a tip end 320b of the heater 30 b;
a resistive heating element 32b, such as a resistive heating coil, disposed around or wound around the substrate 31 b;
an end element 33b adjacent to and defining a front end 310b of the heater 30 b; the end element 33b has a section 331b, a section 332b and a section 333b arranged in succession.
Further with respect to FIG. 6, section 331b is conically shaped and has a decreasing outer diameter in a direction proximate to front end 310b, and front end 310b of heater 30b is defined by the conical tip of section 331 b; section 332b and section 333b are each a cylindrical shape of constant outer diameter, with the outer diameter of section 332b being less than the largest outer diameter of section 331b, and the outer diameter of section 333b being less than the outer diameter of section 332 b. Thereby defining a step 335b between section 333b and section 332 b; during assembly, the segment 333b extends into the base 31b from the end of the base 31b near the front end 310b, and forms a tight fit with the base 31 b; the base body 31b provides support and stop for the end element 33b by abutting against the step 335 b.
In this implementation, at least the section 332b of the end element 33b is a conductor made of metal or alloy material; and the upper end of the resistance heating element 32b is electrically connected to the outer surface of the segment 332b by silver paste, solder, or a bonding wire 360 b.
A first lead 351b extends from end 320b into bore 334b of end member 33b and is electrically connected to the inside surface of segment 332b by welding or the like, thereby providing indirect electrical communication with the upper end of resistive heating element 32 b. The first lead 351b extends from within the hollow of the tubular base 31b to within the bore 334b of the end element 33 b.
The second wire 352b is directly connected to the lower end of the resistance heating element 32b by welding, crimping, or the like.
And the heater 30 further includes a protective coating 34b formed by spraying or dipping, depositing, etc. over the resistive heating element 32b and the substrate 31 b.
In this implementation, the end element 33b is obtained by welding in succession a section 331b, a section 332b and a section 333b made of different materials. For example, the section 331b is made of ceramic, the section 332b is made of conductor, and the section 333b is made of ceramic.
In yet another alternative implementation, or as shown in FIG. 7, both segment 332c and segment 333c of end element 33c of heater 30c are made of a conductive material; the upper end of the resistance heating element 32c is connected to the outer surface of the section 332c of the end element 33c by silver paste, solder or solder wire 360c, and the first conducting wire 351c is soldered to the exposed surface of the section 333c, so that the first conducting wire 351c is indirectly conducted to the upper end of the resistance heating element 32 c.
In this embodiment, the end member 33c is made entirely of a single conductive material such as a metal or alloy, for example, powder metallurgy.
It should be noted that the preferred embodiments of the present application are shown in the specification and the drawings, but the present application is not limited to the embodiments described in the specification, and further, it will be apparent to those skilled in the art that modifications and variations can be made in the above description, and all such modifications and variations should be within the scope of the appended claims of the present application.
Claims (15)
1. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; it is characterized by comprising:
a chamber for receiving an aerosol-generating article; and
a heater extending at least partially within the chamber for insertion into an aerosol-generating article to heat the aerosol-generating article; the heater has a free front end located within the chamber and a distal end facing away from the free front end;
wherein the heater comprises:
a base extending along a length of the heater between the free leading end and the terminal end;
a resistive heating coil surrounding at least a portion of the substrate; and
a protective coating surrounding at least a portion of the resistive heating coil and holding the resistive heating coil outside of the substrate.
2. The aerosol-generating device of claim 1, wherein the protective coating at least partially defines an outer surface of the heater.
3. An aerosol-generating device according to claim 1 or 2, wherein the protective coating has a thickness of 0.001 to 1 mm.
4. An aerosol-generating device according to claim 1 or 2, wherein the substrate has a first end adjacent the free leading end, and a second end adjacent the tip;
the heater further comprises:
a first wire and a second wire for supplying power to the resistive heating coil; the first wire extends from the second end of the substrate to the first end and is conductively connected to one end of the resistive heating coil proximate the first end; the second wire is conductively connected to the other end of the resistive heating coil near the second end.
5. An aerosol-generating device according to claim 4, wherein the substrate is tubular in shape extending along the length of the heater.
6. The aerosol-generating device of claim 5, wherein the first lead extends at least partially within the substrate.
7. Aerosol-generating device according to claim 1 or 2, wherein the cross-section of the wire material of the resistive heating coil has a first dimension extending in an axial direction and a second dimension extending in a radial direction; the first size is greater than the second size.
8. The aerosol-generating device of claim 4, wherein the heater further comprises:
an end element adjacent to and defining a free front end of the heater; the end element is arranged to abut against the first end of the base body to form a stop.
9. An aerosol-generating device according to claim 8, wherein the end element is at least partially a conductor; the first wire is indirectly in electrically conductive connection with the resistive heating coil by being connected to the end member.
10. The aerosol-generating device of claim 8, wherein the end element extends at least partially into the substrate from the first end of the substrate.
11. The aerosol-generating device of claim 8, wherein the end element comprises a first section and a second section arranged in series; wherein the content of the first and second substances,
the first section is exposed outside the base and defines the free front end;
the second segment extends from the first end of the substrate into the substrate.
12. The aerosol-generating device of claim 1 or 2, wherein the protective coating is configured to surround both the resistive heating coil and the substrate.
13. Aerosol-generating device according to claim 1 or 2, in which the protective coating comprises at least two coatings arranged one after the other from the inside in the radial direction of the heater.
14. An aerosol-generating device configured to heat an aerosol-generating article to generate an aerosol; it is characterized by comprising the following steps:
a chamber for receiving an aerosol-generating article;
a heater extending at least partially within the chamber for insertion into an aerosol-generating article to heat the aerosol-generating article; the heater includes a free front end located within the chamber and a distal end facing away from the free front end, and:
a base configured in a tubular shape extending in a length direction of the heater and having a first end near the free leading end and a second end near the tip;
a resistive heating element coupled to an outer side of the substrate and surrounding at least a portion of the substrate;
an end element adjacent to and defining a free front end of the heater; the end element extends at least partially from the first end of the base body into the tubular hollow of the base body.
15. A heater for an aerosol-generating device, wherein the heater is configured as a pin or needle or rod having free leading and trailing ends disposed apart along a length; the heater includes:
a base extending along a length of the heater between the free leading end and the terminal end;
a resistive heating coil surrounding at least a portion of the substrate;
a protective coating surrounding at least a portion of the resistive heating coil and holding the resistive heating coil outside of the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236287.2U CN217184847U (en) | 2021-12-21 | 2021-12-21 | Gas mist generating device and heater for gas mist generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236287.2U CN217184847U (en) | 2021-12-21 | 2021-12-21 | Gas mist generating device and heater for gas mist generating device |
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| CN217184847U true CN217184847U (en) | 2022-08-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116576A1 (en) * | 2021-12-21 | 2023-06-29 | 深圳市合元科技有限公司 | Aerosol generating device and heater therefor |
| WO2024114367A1 (en) * | 2022-12-01 | 2024-06-06 | 深圳市合元科技有限公司 | Aerosol generating device, and heater for aerosol generating device |
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2021
- 2021-12-21 CN CN202123236287.2U patent/CN217184847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116576A1 (en) * | 2021-12-21 | 2023-06-29 | 深圳市合元科技有限公司 | Aerosol generating device and heater therefor |
| WO2024114367A1 (en) * | 2022-12-01 | 2024-06-06 | 深圳市合元科技有限公司 | Aerosol generating device, and heater for aerosol generating device |
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