Heating structure and heating non-combustion smoking set

Abstract

The invention discloses a heating structure and a heating non-combustion smoking set. The heating structure comprises a heating body, and the outer surface of the heating body is coated with a radiation surface; the outer side of the heating body is sleeved with the quartz tube, and the quartz tube and the heating body are fixedly connected through a bonding material; the two wires are electrically connected with the two ends of the heating body respectively, and the ends, away from the heating body, of the wires extend to the outer side of the quartz tube. Compared with the prior art, the heating structure and the heating non-combustion smoking set have the advantages that the tobacco matrix can be quickly and uniformly heated, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible atomization technology, and more specifically, to a heating structure and a heated non-combustible smoke device. Background Technology

[0002] Heated tobacco products work by heating the tobacco in cigarettes to produce an aerosol. Compared to the traditional method of directly lighting and smoking tobacco, this method effectively reduces the production of harmful components, thereby reducing the tar and carbon monoxide produced by the high-temperature combustion of tobacco. Heated tobacco products convert nicotine in tobacco into vapor, without burning the tobacco itself, producing no ash, and resulting in lower tar content, effectively reducing the harm of secondhand smoke.

[0003] Currently, most heated tobacco products on the market use ceramic or metal needles. These needles are inserted directly into the aerosol generating matrix for heating. On the one hand, this contact heating method can easily lead to localized carbonization of the aerosol generating matrix, resulting in uneven heating and making it difficult to maintain a consistent aroma and taste in the heated tobacco. On the other hand, the outer surface of the ceramic or metal needles is prone to accumulating dirt, requiring frequent cleaning, and their heating performance deteriorates significantly with long-term use.

[0004] Therefore, there is an urgent need for a heating structure and a heated non-combustible smoke appliance that can quickly and uniformly heat the aerosol generating matrix, improve the user experience, and have a long service life. Summary of the Invention

[0005] To address the aforementioned technical issues, this application provides a heating structure and a heated non-combustible smoke appliance that heats the aerosol generating matrix using light wave radiation heating, enabling rapid and uniform heating of the aerosol generating matrix, improving user experience, and extending service life.

[0006] The technical solution provided in this application is as follows: A heating structure, comprising: A heating element, the outer surface of which is coated with a radiating surface; A quartz tube is fitted onto the outside of the heating element, and the quartz tube and the heating element are fixedly connected by an adhesive material; Two wires are electrically connected to both ends of the heating element to generate heat. The end of the wire away from the heating element extends to the outside of the quartz tube.

[0007] Preferably, it further includes: The base has a central hole at its center that mates with the quartz tube. An injection hole is provided at the bottom of the base and communicates with the central hole; An adhesive disposed within the injection hole for fixing the quartz tube within the base.

[0008] Preferably, the base is a one-piece molded structure, and the base is made of alumina material.

[0009] Preferably, the heating element is configured such that when the heating element is heated to 320°C to 350°C, the heating element generates a mid-infrared band of 3.5μm–7.0μm.

[0010] Preferably, the heating element comprises: Connecting pipe; The two heating elements connected to the connecting tube extend in a spiral shape along the axial direction of the quartz tube, and are spaced apart around the circumference of the connecting tube. The electrode plates are arranged in a one-to-one correspondence with the heating elements. The electrode plates are connected to the ends of the heating elements that are away from the connecting tube. The electrode plates are used to connect the heating elements and the wires.

[0011] Preferably, the resistance of the heating element is 0.6. -0.7 The rated voltage of the heating element is 3.7V-4.0V.

[0012] Preferably, the heating element is made of SUS304 or SUS316, and the heating element is specifically formed by three-dimensional laser cutting of a stainless steel tube.

[0013] Preferably, it further includes: A temperature control element is fitted inside the heating element, and an insulating layer is provided on the outside of the temperature control element; A connector disposed between the temperature control element and the heating element for fixing the temperature control element and the heating element.

[0014] Preferably, the temperature control element includes any one of a thermistor, a resistance temperature detector (RTD), or a thermocouple.

[0015] A heated non-combustible smoking appliance includes a heating structure and a housing. in, The heating structure is specifically the heating structure described above. The housing is fitted onto the outside of the heating structure, and an internal space is formed between the housing and the heating structure. The internal space is used to contain the aerosol generating matrix.

[0016] The heating structure provided by this invention includes a heating element, a quartz tube, and two wires, each electrically connected to one end of the heating element to facilitate rapid heating. The outer surface of the heating element is coated with a radiating surface. The heating element generates light waves through heating, which heat the aerosol generating matrix, resulting in higher heating efficiency. Compared to existing contact heating methods, which are prone to causing localized carbonization of tobacco and affecting taste and safety, this method of heating the aerosol generating matrix based on light radiation is more efficient. Secondly, the quartz tube is fitted onto the outside of the heating element, and the quartz tube and the heating element are fixedly connected by an adhesive material. On the one hand, the quartz tube is a highly transparent material, which facilitates the passage of light waves onto the aerosol generating matrix. The quartz tube isolates the heating element from the aerosol generating matrix, preventing scale buildup on the heating element. On the other hand, the quartz tube is heat-resistant and not prone to cracking in high-temperature environments, making it suitable for frequent machine start-ups and shutdowns. The quartz tube also has strong acid resistance, facilitating subsequent cleaning of the heating structure and preventing cleaning fluid from contaminating the heating element, thereby extending the lifespan of the heating element. Therefore, compared with existing technologies, the heating structure in this embodiment of the invention, which heats the aerosol generating matrix based on light wave radiation heating, can achieve rapid and uniform heating of the aerosol generating matrix, improve user experience, and has a long service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A first-view cross-sectional view of the heating structure provided in an embodiment of the present invention; Figure 2 A cross-sectional view from a second perspective of the heating structure provided in an embodiment of the present invention; Figure 3 An assembly diagram of the heating structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a heating element provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of a base provided in an embodiment of the present invention.

[0019] Reference numerals: 1. Heating element; 2. Quartz tube; 3. Adhesive material; 4. Wire; 5. Base; 6. Temperature control element; 7. Connector; 11. Connecting tube; 12. Heating element; 13. Electrode plate; 51. Center hole; 52. Glue injection hole; 53. Adhesive; 54. Assembly hole; 61. Insulation layer. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0024] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0025] The embodiments of this invention are written in a progressive manner.

[0026] like Figures 1 to 5 As shown, an embodiment of the present invention provides a heating structure, including: a heating element 1, the outer surface of which is coated with a radiating surface; a quartz tube 2, which is fitted onto the outside of the heating element 1 and is fixedly connected to the heating element 1 by an adhesive material 3; and two wires 4, which are electrically connected to both ends of the heating element 1 to make the heating element 1 heat up, with one end of the wires 4 away from the heating element 1 extending to the outside of the quartz tube 2.

[0027] Currently, most heated tobacco products on the market use ceramic or metal needles. These needles are inserted directly into the aerosol generating matrix for heating. On the one hand, this contact heating method can easily lead to localized carbonization of the aerosol generating matrix, resulting in uneven heating and making it difficult to maintain a consistent aroma and taste in the heated tobacco. On the other hand, the outer surface of the ceramic or metal needles is prone to accumulating dirt, requiring frequent cleaning, and their heating performance deteriorates significantly with long-term use.

[0028] Compared with the prior art, the heating structure provided by the present invention, firstly, is equipped with a heating element 1, a quartz tube 2, and wires 4. There are two wires 4, each electrically connected to both ends of the heating element 1 to provide power and enable rapid heating. The outer surface of the heating element 1 is coated with a radiating surface. The heating element 1 generates light waves through heating, which heat the aerosol generating matrix. This results in higher heating efficiency. Heating the aerosol generating matrix based on light wave radiation is more efficient than the contact heating method in the prior art, which easily leads to localized carbonization of tobacco, affecting taste and safety.

[0029] Secondly, the quartz tube 2 is fitted onto the outside of the heating element 1, and the quartz tube 2 and the heating element 1 are fixedly connected by an adhesive material 3. On the one hand, the quartz tube 2 is made of a highly transparent material, which facilitates the passage of light waves onto the aerosol generating matrix. The quartz tube 2 isolates the heating element 1 from the aerosol generating matrix, preventing the accumulation of scale on the heating element 1. On the other hand, the quartz tube 2 is heat-resistant and is not prone to cracking in high-temperature environments. The quartz tube 2 can work stably for a long time at such high temperatures without melting, deforming, or releasing harmful substances, ensuring the safety and service life of the equipment. It is also suitable for frequent machine start-ups and shutdowns. The quartz tube 2 has strong acid resistance, which facilitates the cleaning of the heating structure later, preventing the cleaning fluid from contaminating the heating element 1, thereby extending the service life of the heating element 1. Therefore, compared with the prior art, the heating structure in this embodiment of the invention, which heats the aerosol generating matrix based on light wave radiation heating, can achieve rapid and uniform heating of the aerosol generating matrix, improve the user experience, and has a long service life.

[0030] The heating element 1 is fixed to the quartz tube 2 by the adhesive material 3. The quartz tube 2 is made of hard material, which can protect the internal heating element 1 from external impact, collision or accidental damage. It can also prevent the residue generated by the aerosol matrix from contacting the heating element 1 and prevent the heating element 1 from being contaminated.

[0031] More specifically, the heating element 1 and the quartz tube 2 are connected by an adhesive material 3. The quartz tube 2 and the heating element 1 are in a non-vacuum state, which can balance the internal and external pressures of the quartz tube 2 and expel the gas generated inside, thereby improving the reliability and service life of the component, while reducing the complexity and cost of manufacturing.

[0032] Furthermore, the adhesive material 3 in the embodiments of the present invention includes alumina, methanol and silicone resin, wherein the content of alumina is 75% to 85%, the content of methanol is 1% to 10%, and the content of silicone resin is 5% to 15%. The adhesive material 3 in the embodiments of the present invention has excellent mechanical strength and electrical insulation properties and can withstand high temperatures of 600°C.

[0033] In the above structure, more specifically, the quartz tube 2 in this embodiment of the invention is a quartz glass tube or a milky white quartz glass tube. The quartz tube 2 has a transmittance of >90% in the 2.5~5μm wavelength range, allowing most of the light wave energy to penetrate the tube wall without obstruction and directly act on the tobacco material, thereby achieving efficient heating. The heating element is electrically connected to the wire 4. The quartz tube 2 is an excellent electrical insulator, which can effectively and completely isolate the charged heating element from the aerosol generating matrix, preventing the risk of electric shock and serving as a crucial safety barrier.

[0034] Furthermore, in this embodiment of the invention, the quartz tube 2 is preferably a milky white quartz tube 2. The milky white quartz tube 2 can efficiently convert visible / near-infrared light into far-infrared radiation (wavelength 8~14μm), which directly matches the absorption peak of water molecules in the aerosol generating matrix. When the frequency of far-infrared radiation is consistent with the vibration and rotation frequency of water molecules themselves, resonance will occur, and the energy of photons will be efficiently absorbed by water molecules and converted into the thermal energy of water molecules. The thermal efficiency is higher, the heating rate is faster, and the energy-saving effect is better.

[0035] Furthermore, in this embodiment of the invention, the top of the quartz tube 2 is specifically a conical structure, which facilitates insertion into the aerosol generating matrix.

[0036] In the above structure, the outer surface of the heating element 1 is coated with a radiating surface to improve the emissivity of light waves and enhance the light wave radiation capability. Specifically, the outer surface of the heating element 1 can be sandblasted, coated, or oxidized. The coating can adopt a far-infrared coating structure. After the heating element 1 operates at high temperature, an oxide layer is formed on the surface, which can also improve the emissivity of light waves and enhance the infrared radiation capability.

[0037] In the above structure, as one implementation method, such as Figure 5 As shown, the heating structure in this embodiment of the invention also includes a base 5, which is used to install and fix the quartz tube 2. The base 5 is provided with a central hole 51, an injection hole 52, and an adhesive 53. The central hole 51 is located at the center of the base 5, and the inner diameter of the central hole 51 is used to match the outer diameter of the quartz tube 2. The injection hole 52 is located at the bottom of the base 5, and the adhesive 53 is provided in the injection hole 52. By injecting the adhesive 53 into the injection hole 52, the quartz tube 2 is fixed in the base 5.

[0038] Furthermore, the adhesive 53 in the embodiments of the present invention includes alumina, methanol and silicone resin, wherein the content of alumina is 75% to 85%, the content of methanol is 1% to 10%, and the content of silicone resin is 5% to 15%. The adhesive 53 in the embodiments of the present invention has excellent mechanical strength and electrical insulation properties and can withstand high temperatures of 600°C.

[0039] In the above structure, the base 5 in this embodiment of the invention is further provided with an assembly hole 54 for mounting the base 5. More specifically, as a more preferred embodiment, the assembly hole 54 in this embodiment of the invention is a threaded hole. More specifically, two assembly holes 54 are provided, symmetrically arranged on both sides of the central hole 54.

[0040] In the above structure, as one embodiment, the base 5 in this invention is specifically a one-piece molded structure, and the base 5 is specifically made of alumina material. The surface of alumina is dense and smooth, making it difficult to adsorb residues. After use, the residue of the aerosol generation matrix does not easily adhere to the base 5, making it easy to maintain hygiene.

[0041] In one embodiment of the above structure, the heating element 1 is configured such that when the heating element 1 is heated to 320°C to 350°C, the heating element 1 generates a 3.5–7.0 μm mid-infrared band, and the light wave has the strongest penetrability and absorption efficiency for the aerosol generation matrix.

[0042] Furthermore, as one implementation method, such as Figure 4As shown, the heating element 1 in this embodiment of the invention includes a connecting tube 11, a heating element 12, and electrode plates 13. Two heating elements 12 are connected to the connecting tube 11 and extend spirally along the axial direction of the connecting tube 11, with the two heating elements spaced apart circumferentially along the connecting tube 11. Two electrode plates 13 are also provided, each connected to the end of one heating element 12 furthest from the connecting tube 11. The electrode plates 13 are used to connect the heating elements 12 and the wire 4. The heating element 1 adopts a parallel-wound double-helix structure. The heat fields generated by the two spiral heating elements 12 can be superimposed and supplemented to form a larger and more uniform heat envelope, enabling rapid heating and more uniform heating. This allows the volatile components in the aerosol generating matrix to be released synchronously and fully, resulting in a more stable, full, and consistent taste in every bite, greatly improving the user experience.

[0043] On the one hand, by setting the heating element to a double-helix sheet structure, the radial surface area can be increased, thereby increasing the radiation surface area; on the other hand, the electrode sheets are on the same side of the heating element 1, simplifying the installation structure.

[0044] Furthermore, two heating elements 12 are positioned on one side of the connecting tube 11, and electrode plates 13 extend toward the heating elements 12 away from the connecting tube 11, thereby ensuring that the lead wire is led out from one end of the quartz tube 2.

[0045] In the above structure, as one embodiment, the pitch a of the two heating elements 12 in this embodiment of the invention is 1.8mm-2.2mm, the helical gap b is 0.35mm to 0.5mm, the helical width W is 0.5mm to 0.7mm, the helical gap is 0.36mm, and the thread length L is 9mm-12mm. The thread length is adapted to the length of the aerosol generating matrix. This allows the heating element to achieve a rated resistance of 0.6 within a limited space. Up to 0.7 .

[0046] Furthermore, in this embodiment of the invention, the electrode sheet 13 is specifically an arc-shaped structure, and the electrode sheet 13 extends along the axial direction of the connecting pipe 11, with a flattened width of 1.3 mm.

[0047] Furthermore, the electrode sheet 13 and the heating element 12 can be connected by welding, bonding or interlocking. More specifically, the electrode sheet 13 and the heating element 12 are connected by welding.

[0048] In the above structure, as one embodiment, the resistance value of the heating element 1 in this embodiment of the invention is 0.6. -0.7 The rated voltage of heating element 1 is 3.7V-4.0V.

[0049] Furthermore, in this embodiment of the invention, the heating element 1 is made of SUS304 or SUS316. Specifically, the heating element 1 is formed by three-dimensional laser cutting of a stainless steel tube. The stainless steel tube has a wall thickness of 0.1mm and an outer diameter of 1.2mm to 1.3mm. Three-dimensional laser cutting is a high-end manufacturing process that combines high-precision CNC technology with laser processing, resulting in higher precision.

[0050] Preferably, the heating element 1 is made of SUS316, because SUS316 has relatively stable radiation characteristics in the infrared band.

[0051] Preferably, we also consider using the temperature coefficient of resistance (TCR) inherent in the SUS316 itself for temperature control.

[0052] In the above structure, as another implementation, the heating structure in this embodiment of the invention further includes a temperature control element 6 and a connecting element 7. The temperature control element 6 is fitted inside the heating element 1, and controls the temperature of the heating element 1 to ensure temperature stability. An insulating layer 61 is provided on the outer side of the temperature control element 6. The connecting element 7 is disposed between the temperature control element 6 and the heating element 1, and is used to fix the temperature control element 6 inside the heating element 1. By setting the temperature control element 6, the temperature of the heating element 1 is kept stable, avoiding high-temperature decomposition of tobacco caused by heating temperature fluctuations, which could release harmful substances such as aldehydes. Furthermore, the mid-infrared band heats up quickly, and dynamic temperature compensation can be achieved through the cooperation of the heating element and the temperature control element 6.

[0053] In the above structure, as one embodiment, the temperature control element 6 in the present invention is specifically any one of a thermistor, a resistance temperature detector (RTD), or a thermocouple.

[0054] Preferably, the temperature control element 6 in this embodiment of the invention is a thermocouple. More specifically, the temperature control element 6 in this embodiment of the invention is a type K thermocouple. A type K thermocouple can measure temperatures from -200℃ to 1300℃. It has a bare wire structure, low thermal inertia, and a response time of 0.1 to 1 second, which is 5-10 times faster than a resistance temperature detector (RTD). The unit price of a type K thermocouple is less than 10 yuan, which is 1 / 5 the unit price of an RTD. It is a passive device requiring no power supply, offers flexible circuit installation, has a minimum diameter of 0.25mm (for micro-temperature measurement), and has better electromagnetic interference resistance than an RTD.

[0055] In the above structure, the connector 7 in the embodiment of the present invention specifically includes alumina, methanol and silicone resin, wherein the content of alumina is 75% to 85%, the content of methanol is 1% to 10%, the content of silicone resin is 5% to 15%, and the adhesive has excellent mechanical strength and electrical insulation properties and can withstand high temperature of 600°C.

[0056] The present invention also provides a heated non-combustible smoke device, including a heating structure and a shell, wherein the shell is fitted on the outside of the heating structure, and an internal space is formed between the shell and the heating structure. The heating structure is the aforementioned heating structure, and the aerosol generating matrix is ​​placed in the internal space. The heating structure heats the aerosol generating matrix through infrared radiation, which can achieve rapid and uniform heating of the aerosol generating matrix and achieve rapid smoke generation in 5 seconds.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating structure, characterized in that, include: A heating element (1) has a radiating surface coated on its outer surface. Quartz tube (2), the quartz tube (2) is fitted on the outside of the heating element (1), and the quartz tube (2) and the heating element (1) are fixedly connected by adhesive material (3); Two wires (4) are electrically connected to the two ends of the heating element (1) respectively, so as to make the heating element (1) heat up. The end of the wire (4) away from the heating element (1) extends to the outside of the quartz tube (2).

2. The heating structure according to claim 1, characterized in that, Also includes: The base (5) has a central hole (51) at its center that is used in conjunction with the quartz tube (2). An injection hole (52) is provided at the bottom of the base (5) and communicates with the central hole (51). An adhesive (53) is disposed in the injection hole (52) for fixing the quartz tube (2) in the base (5).

3. The heating structure according to claim 2, characterized in that, The base (5) is specifically an integrally formed structure, and the base (5) is made of alumina material.

4. The heating structure according to any one of claims 1 to 3, characterized in that, The heating element (1) is configured such that when the heating element (1) is heated to 320°C to 350°C, the heating element (1) generates a mid-infrared band of 3.5μm–7.0μm.

5. The heating structure according to claim 4, characterized in that, The heating element (1) includes: Connecting pipe (11); The two heating elements (12) connected to the connecting tube (11) extend in a spiral shape along the axial direction of the quartz tube (2), and the two heating elements (12) are arranged circumferentially around the connecting tube (11); Electrode (13) is provided in a one-to-one correspondence with heating element (12). The electrode (13) is connected to the end of heating element (12) away from the connecting tube (11). The electrode (13) is used to connect heating element (12) and wire (4).

6. The heating structure according to claim 5, characterized in that, The resistance of the heating element (1) is 0.

6. -0.7 The rated voltage of the heating element (1) is 3.7V-4.0V.

7. The heating structure according to claim 5, characterized in that, The heating element (1) is made of SUS304 or SUS316, and the heating element (1) is specifically formed by three-dimensional laser cutting of stainless steel tube.

8. The heating structure according to any one of claims 5 to 7, characterized in that, Also includes: A temperature control element (6) is installed inside the heating element (1), and an insulating layer (61) is provided on the outside of the temperature control element (6). A connector (7) is disposed between the temperature control element (6) and the heating element (1) for fixing the temperature control element (6) and the heating element (1).

9. The heating structure according to claim 8, characterized in that, The temperature control element (6) includes any one of a thermistor, a resistance temperature detector (RTD), or a thermocouple.

10. A heated non-combustible smoking appliance, characterized in that, Including the heating structure and the casing, in, The heating structure is specifically the heating structure according to any one of claims 1 to 9, wherein the housing is fitted on the outside of the heating structure, and an internal space is formed between the housing and the heating structure, the internal space being used to contain the aerosol generating matrix.

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