Low-temperature bake type smoking device

Abstract

To provide a low-temperature bake type smoking tool.SOLUTION: Provided is a low-temperature bake type smoking tool including: a heating substrate having a hollow shape and formed with a heating chamber for storing a smoke generation substance therein; a far-infrared coating coated on an outer side of the heating substrate; a first conductive module that is provided outside the heating substrate and contacts with the far-infrared coating; a second conductive module that is provided outside the heating substrate, and in contact with the far-infrared coating, and in which at least a part of the far-infrared coating is located in between the first conductive module and the second conductive module; and a power feeding unit electrically connected to the first conductive module and the second conductive module such that far-infrared light generated by electrification to at least a part of the far-infrared coating is transmitted through the heating substrate and radiation-heats the smoke generation substance in the heating chamber. Since the far-infrared light has high transmissivity and can be transmitted through the smoke generation substance in the outer periphery and reach the inside, uniform heating of the smoke generation substance is achieved.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the field of smoking articles, and in particular to low-bake smoking articles. [Background technology]

[0002] A low-temperature bake smoking device generally includes a heating element and a power supply unit. The power supply unit supplies electrical energy to the heating element. The heat generated by passing electricity through the heating element bakes the smoke-producing substance contained within the low-temperature bake smoking device, producing smoke that can be directly inhaled by the smoker. Low-temperature bake smoking devices are popular with many smokers because they are highly portable, do not produce open flames, and are environmentally friendly.

[0003] Conventional low-temperature bake smoking devices generally employ central heating and peripheral heating. In central heating, a heating element is inserted into the smoke-producing substance, while in peripheral heating, a cylindrical heating element is placed around the smoke-producing substance, bringing the heating element into direct contact with the smoke-producing substance, and the heat from the heating element is transferred to the smoke-producing substance, thereby baking it.

[0004] Both central heating and peripheral heating are based on heat transfer caused by direct contact between the heating element and the smoke-producing substance. In the case of central heating, the temperature of the center of the smoke-producing substance may become too high, but the periphery may not be heated properly. In the case of peripheral heating, the temperature of the periphery of the smoke-producing substance may become too high, but the center may not be heated properly. In other words, heating is uneven in both central and peripheral heating. Summary of the Invention [Problem to be solved by the invention]

[0005] To solve the problem of the inability to heat smoke-producing substances uniformly in conventional low-temperature bake smoking devices, embodiments of the present invention provide a low-temperature bake smoking device that can heat smoke-producing substances uniformly. [Means for solving the problem]

[0006] a heating base having a hollow interior and a heating chamber formed therein for accommodating a smoke-producing substance; a far infrared coating applied to the exterior of the heating substrate; a first conductive module disposed outside the heating substrate and in contact with the far-infrared coating; a second conductive module disposed outside the heating substrate and in contact with the far-infrared coating, with at least a portion of the far-infrared coating positioned between the first and second conductive modules; a power supply unit electrically connected to the first and second conductive modules so that far-infrared light generated by the application of current to at least a portion of the far-infrared coating passes through the heating base and radiates heat to the smoke-producing substance in the heating chamber; A low-temperature bake type smoking device including:

[0007] Optionally, the first conductive module includes a first elongated portion extending in the longitudinal direction of the heating base, and the second conductive module includes a second elongated portion extending in the longitudinal direction of the heating base, the first elongated portion and the second elongated portion being spaced apart from each other and located outside the heating base, the first elongated portion and the second elongated portion at least partially overlapping each other in the longitudinal direction of the heating base, and current in the first elongated portion flows through the far-infrared coating along the circumferential direction of the heating base to reach the second elongated portion.

[0008] Optionally, the heating base has opposing first and second ends, the first conductive module further includes a first annular portion fitted to the outside of the first end of the heating base, and the first elongated portion extends from the first annular portion to the second end; The second conductive module further includes a second annular portion fitted onto the outside of the second end of the heating base, and the second elongated portion extends from the second annular portion to the first end.

[0009] Optionally, in the longitudinal direction of the heating base, the length of the first elongated portion is smaller than the distance between the first annular portion and the second annular portion, the length of the second elongated portion is smaller than the distance between the second annular portion and the first annular portion, and in the heating base, no far-infrared coating is applied to the region between the first elongated portion and the second annular portion, and no far-infrared coating is applied to the region between the second elongated portion and the first annular portion.

[0010] Optionally, the low-temperature bake smoking device further comprises a third conductive module and a fourth conductive module, wherein the third conductive module comprises a third elongated portion extending in the longitudinal direction of the heating substrate, and the fourth conductive module comprises a fourth elongated portion extending in the longitudinal direction of the heating substrate, wherein, in the longitudinal direction of the heating substrate, the third elongated portion and the first elongated portion do not overlap, the fourth elongated portion and the second elongated portion do not overlap, and the third elongated portion and the fourth elongated portion at least partially overlap, and current in the third elongated portion flows through the far-infrared coating along the circumferential direction of the heating substrate to reach the fourth elongated portion.

[0011] Optionally, the heating base has opposing first and second ends, the first conductive module further comprising a first annular portion surrounding the outside of the first end of the heating base, the first elongated portion extending from the first annular portion to the second end; the second conductive module further includes a second annular portion surrounding an outer intermediate portion of the heating base, the second elongated portion extending from the second annular portion to the first end; the third conductive module further includes a third annular portion surrounding the outside of the second end of the heating base, the third elongated portion extending from the third annular portion to the first end; The fourth conductive module further includes a fourth annular portion surrounding an outer middle portion of the heating base, and the fourth elongated portion extends from the fourth annular portion to the second end.

[0012] Optionally, the second annular portion and the fourth annular portion overlap each other, and in the longitudinal direction of the heating base, the length of the first elongated portion is smaller than the distance between the first annular portion and the second annular portion, and a far-infrared coating is not applied to a region between the first elongated portion and the second annular portion; the length of the second elongated portion is smaller than the distance between the second annular portion and the first annular portion, and a far-infrared coating is not applied to a region between the second elongated portion and the first annular portion; the length of the third elongated portion is smaller than the distance between the third annular portion and the fourth annular portion, and a far-infrared coating is not applied to a region between the third elongated portion and the fourth annular portion; and the length of the fourth elongated portion is smaller than the distance between the fourth annular portion and the third annular portion, and a far-infrared coating is not applied to a region between the fourth elongated portion and the third annular portion.

[0013] Optionally, the low-temperature bake smoking device includes 2N conductive modules, each of which includes a long portion extending in the longitudinal direction of the heating base, the heating base being divided into 2N spaced-apart portions by the long portions in the circumferential direction of the heating base, a far-infrared coating being applied to the outside of the heating base between every two adjacent long portions, and current in a long portion flows through the far-infrared coating along the circumferential direction of the heating base to reach an adjacent long portion, where N is a positive integer greater than or equal to 1. Optionally, the low-temperature bake smoking device further includes an insulating member fitted to the outside of the heating base, the insulating member including an insulating inner tube, an insulating outer tube, an aerogel filled between the insulating inner tube and the insulating outer tube, and two sealing plugs located at both ends of the insulating inner tube for sealing the aerogel.

[0014] Optionally, the first conductive module and the second conductive module are both conductive rings fitted to the outside of the heating base and in contact with the far-infrared coating, and the low-temperature bake smoking device further includes an insulating member fitted to the outside of the heating base, and the conductive rings are sandwiched and fixed between the heating base and the insulating member.

[0015] Optionally, the inside of the thermally insulated inner pipe is coated with an infrared light reflecting material.

[0016] Optionally, the first conductive module and the second conductive module are both conductive coatings applied to the heated substrate.

[0017] Optionally, the heating substrate is made of quartz glass, mica, or ceramic.

[0018] Optionally, the low-temperature bake smoking device further includes a third conductive module located between the first conductive module and the second conductive module. [Effects of the Invention]

[0019] Compared to conventional technology, a far-infrared coating is applied to the outside of the heating base, and when electricity is applied, the smoke-producing substance inside the heating base is heated by far-infrared light. Since far-infrared light has high transparency, it can penetrate the outer smoke-producing substance and reach the inside, so the smoke-producing substance is heated evenly.

[0020] One or more embodiments will be illustratively described with reference to the images in the corresponding drawings, but these illustrative descriptions are not limiting of the embodiments, and elements in the drawings with the same reference numerals represent similar elements, and unless otherwise stated, the images in the drawings are not limited to their proportions. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is an exploded view of a low-temperature bake smoking device according to a first embodiment of the present invention; [Figure 2] FIG. 1 is a three-dimensional view of a heating assembly of a low-temperature bake smoking device according to a first embodiment. [Figure 3] FIG. 2 is a three-dimensional cross-sectional view of an insulating member of a low-temperature bake smoking article according to the first embodiment. [Figure 4] 1 is a three-dimensional view of a control assembly of a low-temperature bake smoking device according to a first embodiment. FIG. [Figure 5]FIG. 2 is a component diagram of the insulating member and heating assembly of a low-temperature bake smoking device according to a second embodiment of the present invention. [Figure 6] FIG. 2 is a three-dimensional view of a heating assembly of a low-temperature bake smoking device according to a third embodiment of the present invention. [Figure 7] FIG. 10 is a three-dimensional view of a heating assembly of a low-temperature bake type smoking device according to a fourth embodiment of the present invention. [Figure 8] FIG. 8 is a view of FIG. 7 seen from a different direction. [Figure 9] This is a plan view of a heating assembly of a low-temperature bake type smoking device according to embodiment 5 of the present invention with the fixed base removed. [Figure 10] FIG. 10 is a view of FIG. 9 seen from a different direction. [Figure 11] This is a plan view of a heating assembly of a low-temperature bake type smoking device according to embodiment 6 of the present invention with the fixed base removed. DETAILED DESCRIPTION OF THE INVENTION

[0022] To facilitate understanding of the present invention, the present invention will be described in more detail below in conjunction with the drawings and specific embodiments. When an element is referred to as being "fixed" to another element, it may be directly located on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected" to another element, it should be understood that it may be directly connected to the other element, or there may be one or more intervening elements therebetween. Terms such as "upper," "lower," "left," "right," "inner," "outer," and similar descriptions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to be limiting of the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated items.

[0024] Embodiment 1 As shown in FIG. 1, a low-temperature bake smoking device according to a first embodiment of the present invention mainly includes a housing 1, a holder 2, a heating assembly 3, a heat insulating member 4, a power supply unit 5, a control assembly 6, and a temperature measuring element 7.

[0025] The housing 1 includes a flat annular body 11 having openings at the top and bottom, and an upper cover 12 and a lower cover 13 located on the top and bottom sides of the body 11, respectively.

[0026] The holder 2 is housed and fixed in the main body 11, and the holder 2, the main body 11, the upper cover 12, and the lower cover 13 cooperate to divide the inside of the main body 11 into a plurality of cavities.

[0027] As shown in FIGS. 1 and 2, the heating assembly 3 includes a fixed base 30 , a heating substrate 31 , a far-infrared coating 32 , a first conductive module 331 and a second conductive module 332 .

[0028] The fixed base 30 is attached to the lower cover 13 and is located between the upper cover 12 and the lower cover 13, with an air inlet hole passing through its center. The heating base 31 is a long, hollow tubular structure with a first end a and a second end b opposite each other, i.e., the heating base has opposite upper and lower ends. The heating base 31 is located on the fixed base 30 and is made of a transparent material that can withstand high temperatures, such as quartz glass, ceramic, or mica.

[0029] The far-infrared coating 32 is applied to the outside of the heating substrate 31. That is, the far-infrared electric heating ink, ceramic powder and inorganic binder are mixed thoroughly and uniformly, and then applied to the surface of the heating substrate 31. Then, the coating is cured by heating and drying for 60 minutes, and the thickness of the coating is 30-50 μm.

[0030] In this embodiment, the first conductive module 331 and the second conductive module 332 are conductive coatings applied to the upper and lower ends of the heating base 31, respectively. These conductive coatings are made of silver powder coating and are in contact with the far-infrared coating 32, which is located between the two conductive coatings.

[0031] It can be understood that the first conductive module 331 and the second conductive module 332 may be made of a metallic material having high electrical conductivity.

[0032] 1 and 3, the heat insulating member 4 is fitted onto the outside of the heating base 31 and includes a heat insulating inner pipe 41, a heat insulating outer pipe 42, two annular sealing plugs 43, and an aerogel (not shown) disposed between the heat insulating inner pipe 41 and the heat insulating outer pipe 42. The heat insulating inner pipe 41 and the heat insulating outer pipe 42 are disposed coaxially, and the two sealing plugs 43 are located at the upper and lower ends of the heat insulating inner pipe 41 and the heat insulating outer pipe 42, respectively, to seal the storage space formed between the heat insulating inner pipe 41 and the heat insulating outer pipe 42. The aerogel may be silicon-based, carbon-based, sulfur-based, metal oxide-based, or metal-based, and because it is 80% or more air, it has a very high heat insulating effect. An infrared light reflecting material is applied to the inside of the heat-insulating inner pipe 41, so that the far-infrared light emitted from the energized far-infrared coating 32 is reflected back into the heating base 31 and heats the smoke-producing substance located inside the heating base 31, thereby improving the effective utilization rate of the far-infrared light emitted from the far-infrared coating 32 and increasing heating efficiency.

[0033] The power supply unit 5 is mainly for supplying electrical energy to the heating assembly 3 and the control assembly 6, and is housed in the main body 11. In this embodiment, the power supply unit 5 is a rechargeable battery.

[0034] As shown in Figures 1 and 4, the control assembly 6 mainly includes a circuit board 61, a controller 62, and a switch button 63. The circuit board 61 is mounted on the holder 2, the controller 62 is fixed to the circuit board 61, and the switch button 63 is protruded from the main body 11. By clicking the switch button 63, the far-infrared coating 32 can be energized or cut off, i.e., the heating assembly 3 can be made to generate heat or not.

[0035] The temperature measuring element 7 is a temperature sensor mounted on the outer surface of the heating substrate 31, and is used to detect the real-time temperature of the heating substrate 31 and transmit it to the controller 62. The controller 62 adjusts the magnitude of the current flowing through the far-infrared coating 32 based on this real-time temperature. Specifically, when the temperature measuring element 7 detects that the real-time temperature of the heating substrate 31 is low, for example, the temperature inside the heating substrate 31 is below 150°C, the controller 62 controls the power supply unit 5 to output a higher voltage to the conductive coating, thereby increasing the current supplied to the far-infrared coating 32 and improving the heating power for the smoke-producing substances, thereby reducing the time it takes for the smoker to inhale the first smoke. When the temperature measuring element 7 detects that the temperature of the heating substrate 31 is between 150°C and 200°C, the controller 62 controls the power supply unit 5 to output a normal voltage to the conductive coating. When the temperature measuring element 7 detects that the temperature of the heating substrate 31 is between 200°C and 250°C, the controller 62 controls the power supply unit 5 to output a lower voltage to the conductive coating. When the temperature measuring element 7 detects that the temperature inside the heating substrate 31 is 250°C or higher, the controller 62 controls the power supply unit 5 to stop outputting voltage to the conductive coating.

[0036] In this embodiment, a far-infrared coating 32 is applied to the outside of the heating base 31 and electricity is applied to it. The far-infrared light emitted from the far-infrared coating 32 passes through the heating base 31 and radiates heat to the smoke-producing substance located inside the heating base 31. Since the far-infrared light has high transparency and can pass through the smoke-producing substance on the periphery and reach the interior, the smoke-producing substance is heated uniformly.

[0037] Embodiment 2 As shown in Figure 5, this is a heating assembly 3 of a low-temperature bake type smoking device according to embodiment 2 of the present invention. The first conductive module 341 and the second conductive module 342 in this heating assembly 3 are conductive rings fitted onto the outside of the heating base 31, and these conductive rings are sandwiched and fixed between the heating base 31 and the insulating member 4, thereby ensuring good contact between the conductive rings and the far-infrared coating 32 on the heating base 31.

[0038] Embodiment 3 6, a heating assembly 3 for a low-temperature bake smoking device according to embodiment 3 of the present invention is shown. The main difference from embodiment 1 is that this heating assembly 3 further includes a third conductive module 333 located between the first conductive module 331 and the second conductive module 332. The first conductive module 331, the second conductive module 332, and the third conductive module 333 divide the far-infrared coating 32 into two parts, and by turning on or off the three conductive coatings, the two far-infrared coatings 32 are energized at different times. This means that the smoke-producing material contained within the heating substrate 31 is heated in stages in separate compartments.

[0039] Embodiment 4 7 and 8 are schematic diagrams of a heating assembly 3 of a low-temperature bake smoking device according to embodiment 4 of the present invention with the fixed base 30 removed, and are mainly different from the heating assembly 3 of embodiment 1 in that the first conductive module 351 and the second conductive module 352 are made of a metallic material with high conductivity, such as gold and its alloys, silver and its alloys, or copper and its alloys. The first conductive module 351 includes a first annular portion 3511 and a first elongated portion 3512. The first annular portion 3511 is fitted onto the outside of the first end a of the heating base 31, and the first elongated portion 3512 extends from the first annular portion 3511 along the longitudinal direction of the heating base 31 to the second end b of the heating base 31. That is, the first elongated portion 3512 extends downward from the first annular portion 3511 along the axial direction of the heating base 31.

[0040] The second conductive module 352 includes a second annular portion 3521 and a second elongated portion 3522, the second annular portion 3521 being fitted onto the outside of the second end b of the heating base 31, and the second elongated portion 3522 extending from the second annular portion 3521 along the longitudinal direction of the heating base 31 to the first end a of the heating base 31, i.e., the second elongated portion 3522 extending upward from the second annular portion 3521 along the axial direction of the heating base 31.

[0041] In the longitudinal direction of the heating base 31, the length of the first long portion 3512 is smaller than the distance between the first circular portion 3511 and the second circular portion 3521, i.e., the first long portion 3512 is not in contact with the second circular portion 3521. In the longitudinal direction of the heating base 31, the length of the second long portion 3522 is smaller than the distance between the second circular portion 3521 and the first circular portion 3511, i.e., the second long portion 3522 is not in contact with the first circular portion 3511.

[0042] In the longitudinal direction of the heating base 31, the far-infrared coating 32 is not applied to a region 311 located between the first long portion 3512 and the second annular portion 3521, and the far-infrared coating 32 is not applied to a region 312 located between the second long portion 3522 and the first annular portion 3511. The regions 311 and 312 are annular regions, i.e., the far-infrared coating is not applied to the entire circumferential surface of the heating base 31 in the regions 311 and 312. The far-infrared coating 32 is applied to the portion of the heating base 31 where the first long portion 3512 and the second long portion 3522 overlap in the axial direction.

[0043] The first long portion 3512 and the second long portion 3522 are located on opposite sides of the heating base 31, and when the first annular portion 3511 and the second annular portion 3521 are electrically connected to the power supply unit 5, the current in the first long portion 3512 flows through the far-infrared coating 32 along the circumferential direction of the heating base 31 and reaches the second long portion 3522.

[0044] In contrast to conventional methods in which current flows from the first end a to the second end b of the heating base 31 along the axial direction of the heating base 31, in this embodiment, current flows along the circumferential direction of the heating base 31, thereby shortening the distance over which the current flows through the far-infrared coating 32 and reducing the resistance of the far-infrared coating 32 along the current path. Under similar resistance conditions, the far-infrared coating 32 of this embodiment is thinner, which reduces costs and improves the market competitiveness of the low-temperature bake smoking device of this embodiment.

[0045] Embodiment 5 As shown in Figures 9 and 10, this is a schematic diagram of the heating assembly 3 according to embodiment 5 of the present invention with the fixed base 30 removed, and the main difference from embodiment 1 is that the heating assembly 3 further includes a third conductive module 363 and a fourth conductive module 364.

[0046] The first conductive module 361 includes a first annular portion 3611 and a first elongated portion 3612, the first annular portion 3611 being fitted onto the outside of the first end a of the heating base 31, and the first elongated portion 3612 extending from the first annular portion 3611 along the longitudinal direction of the heating base 31 to the second end b of the heating base 31, i.e., the first elongated portion 3612 extending downward from the first annular portion 3611 along the axial direction of the heating base 31.

[0047] The second conductive module 362 includes a second annular portion 3621 and a second elongated portion 3622. The second annular portion 3621 is fitted onto the outside of the middle end of the heating base 31, and the second elongated portion 3622 extends from the second annular portion 3621 along the longitudinal direction of the heating base 31 to the first end a of the heating base 31. That is, the second elongated portion 3622 extends upward from the second annular portion 3621 along the axial direction of the heating base 31. In the longitudinal direction of the heating base 31, the second elongated portion 3622 and the first elongated portion 3612 mostly overlap. In the circumferential direction of the heating base 31, the first elongated portion 3612 and the second elongated portion 3622 are distributed symmetrically on the outside of the heating base 31.

[0048] In the longitudinal direction of the heating base 31, the length of the first long portion 3612 is smaller than the distance between the first circular portion 3611 and the second circular portion 3621, i.e., the first long portion 3612 is not in contact with the second circular portion 3621. In the longitudinal direction of the heating base 31, the length of the second long portion 3622 is smaller than the distance between the second circular portion 3621 and the first circular portion 3611, i.e., the second long portion 3622 is not in contact with the first circular portion 3611.

[0049] In the longitudinal direction of the heating base 31, the far-infrared coating 32 is not applied to a region 313 located between the first long portion 3612 and the second annular portion 3621, and the far-infrared coating 32 is not applied to a region 314 located between the second long portion 3622 and the first annular portion 3611. The regions 313 and 314 are annular regions, i.e., the far-infrared coating is not applied to the entire circumferential surface of the heating base 31 in the regions 313 and 314. The far-infrared coating 32 is applied to the portion of the heating base 31 where the first long portion 3612 and the second long portion 3622 overlap in the axial direction.

[0050] The third conductive module 363 includes a third annular portion 3631 and a third elongated portion 3632, the third annular portion 3631 surrounding the outside of the second end b of the heating base 31, and the third elongated portion 3632 extending from the third annular portion 3631 along the longitudinal direction of the heating base 31 to the first end a, i.e., the third elongated portion 3632 extending upward from the third annular portion 3621 along the axial direction of the heating base 31, and the third elongated portion 3632 and the first elongated portion 3612 do not overlap.

[0051] The fourth conductive module 364 includes a fourth annular portion 3641 and a fourth elongated portion 3642, the fourth annular portion 3641 surrounding the outside of the middle end of the heating base 31, and the fourth elongated portion 3642 extending from the fourth annular portion 3641 along the longitudinal direction of the heating base 31 to the second end b, i.e., the fourth elongated portion 3642 extending downward from the fourth annular portion 3641 along the axial direction of the heating base 31, and the fourth elongated portion 3642 and the second elongated portion 3622 do not overlap.

[0052] The fourth annular portion 3641 and the second annular portion 3621 are identical, i.e., the fourth long portion 3642 and the second long portion 3622 share the same fourth annular portion 3641, i.e., the second long portion 3622 and the fourth long portion 3642 extend from the fourth annular portion 3641 (second annular portion 3621) to the first end a and the second end b of the heating base 31, respectively. In the longitudinal direction of the heating base 31, the fourth long portion 3642 and the third long portion 3632 largely overlap. In the circumferential direction of the heating base 31, the third long portion 3632 and the fourth long portion 3642 are distributed symmetrically on the outside of the heating base 31.

[0053] In the longitudinal direction of the heating base 31, the length of the third long portion 3632 is shorter than the distance between the third annular portion 3631 and the fourth annular portion 3641, and no far-infrared coating 32 is applied to the region 315 between the third long portion 3632 and the fourth annular portion 3641; the length of the fourth long portion 3642 is shorter than the distance between the fourth annular portion 3641 and the third annular portion 3631, and no far-infrared coating 32 is applied to the region 316 between the fourth long portion 3642 and the third annular portion 3631; and the regions 315 and 316 are annular regions, i.e., no far-infrared coating is applied to the entire circumferential surface of the heating base 31 in the regions 315 and 316.

[0054] The first circular ring portion 3611 and the third circular ring portion 3631 are each electrically connected to the positive electrode of the power supply unit 5, and the second circular ring portion 3621 or the fourth circular ring portion 3641 is electrically connected to the negative electrode of the power supply unit 5.

[0055] It will be understood that in some other embodiments, the second annular portion 3621 and the fourth annular portion 3641 may not be identical, i.e., the second annular portion 3621 and the fourth annular portion 3641 may surround the outside of the heating base 31 individually and at intervals.

[0056] When the switch button 63 of the low-temperature bake smoking device is clicked or pressed by a smoker, the low-temperature bake smoking device starts to operate. First, the controller 62 controls the third annular portion 3631 to be electrically connected to the positive electrode of the power supply unit 5, and also controls the fourth annular portion 3641 to be electrically connected to the negative electrode of the power supply unit 5, thereby forming a potential difference between the third elongated portion 3632 and the fourth elongated portion 3642, and a current flows from the third elongated portion 3632 along the circumferential direction of the heating base 31 through the far-infrared coating 32 between them to the fourth elongated portion 3642, and then Far infrared rays are generated from the far infrared coating 32 between the third annular portion 3631 and the fourth annular portion 3641, and the smoke-producing substances of the cigarette located between the third annular portion 3631 and the fourth annular portion 3641 are radiated and heated. When the temperature measuring element 7 detects that the temperature of the heating base 31 has reached a predetermined temperature, the smoke-producing substances of the cigarette between the third annular portion 3631 and the fourth annular portion 3641 have been thoroughly baked, and the controller 62 controls the third annular portion 3631 and the fourth annular portion 3641 to be disconnected from the power supply unit 5.

[0057] At the same time, the controller 62 controls the first annular portion 3611 to be electrically connected to the positive electrode of the power supply unit 5, and also controls the second annular portion 3621 to be electrically connected to the negative electrode of the power supply unit 5, thereby forming a potential difference between the first elongated portion 3612 and the second elongated portion 3622, causing a current to flow from the first elongated portion 3612 along the circumferential direction of the heating base 31 through the far-infrared coating 32 between them to the second elongated portion 3622, and then the far-infrared coating 32 between the first annular portion 3611 and the second annular portion 3621 to be electrically connected to the negative electrode of the power supply unit 5. Infrared rays are generated, and the smoke-producing substances of the cigarette located between the first circular ring portion 3611 and the second circular ring portion 3621 are radiated and heated.When the temperature measuring element 7 detects that the temperature of the heating base 31 has reached a predetermined temperature, the smoke-producing substances of the cigarette between the first circular ring portion 3611 and the second circular ring portion 3621 have been thoroughly baked, and the controller 62 controls the power supply unit 5 to be disconnected from the first circular ring portion 3611 and the second circular ring portion 3621, thereby completing the baking of the cigarette.

[0058] In this embodiment, the controller 62 controls the electrical conduction between the third annular portion 3631 and the fourth annular portion 3641 and the positive and negative electrodes of the power supply unit 5, and the electrical conduction between the first annular portion 3611 and the second annular portion 3621 and the positive and negative electrodes of the power supply unit 5, so that the smoking portion of the cigarette is separated and heated in stages, shortening the time from when the low-temperature bake smoking device begins to operate to when the first smoke is produced, thereby improving the user experience and increasing the amount of smoke produced by the cigarette.

[0059] It will be understood that the first annular portion 3611, the second annular portion 3621, the third annular portion 3631, and the fourth annular portion 3641 are primarily used as contacts for electrical conduction with the positive or negative pole of the power supply unit 5, and that their shapes do not necessarily have to be annular and may be any suitable shape. The annular shape allows for uniform distribution of contact current, making it easier to reduce contact resistance when current flows through the first long portion 3612, the second long portion 3622, the third long portion 3632, and the fourth long portion 3642. It will be understood that in other embodiments, the smoking portion of the cigarette may be heated in three, four, five, or other different stages.

[0060] Embodiment 6 As shown in Figure 11, this is a top view of the heating assembly 3 according to embodiment 6 of the present invention with the fixed base 30 removed, and the main difference from embodiment 4 is that the heating assembly 3 further includes a third conductive module and a fourth conductive module.

[0061] The first conductive module includes a first elongated portion 3712 extending in the longitudinal direction of the heating base 31, the second conductive module includes a second elongated portion 3722 extending in the longitudinal direction of the heating base 31, the third conductive module includes a third elongated portion 3732 extending in the longitudinal direction of the heating base 31, and the fourth conductive module includes a fourth elongated portion 3742 extending in the longitudinal direction of the heating base 31.

[0062] In the circumferential direction of the heating base 31, the first long portion 3712, the second long portion 3722, the third long portion 3732, and the fourth long portion 3742 are arranged in this order on the outside of the heating base 31 at equal intervals in a clockwise direction, and the current in the first long portion 3712 flows clockwise through the far-infrared coating 32 along the circumferential direction of the heating base 31 to reach the second long portion 3722, and also flows counterclockwise through the far-infrared coating 32 along the circumferential direction of the heating base 31 to reach the fourth long portion 3742, and the current in the third long portion 3732 flows clockwise through the far-infrared coating 32 along the circumferential direction of the heating base 31 to reach the fourth long portion 3742, and also flows counterclockwise through the far-infrared coating 32 along the circumferential direction of the heating base 31 to reach the second long portion 3722.

[0063] It will be understood that the first long portion 3712 and the third long portion 3732 are electrically connected to the positive pole of the power supply unit 5, and the second long portion 3722 and the fourth long portion 3742 are electrically connected to the negative pole of the power supply unit 5.

[0064] Compared to embodiment four, in this embodiment, in the circumferential direction of the heating base 31, the far-infrared coating 32 applied to the outside of the heating base 31 is divided into four parts by the first long portion 3712, the second long portion 3722, the third long portion 3732, and the fourth long portion 3742. This further shortens the distance over which current flows through the far-infrared coating 32, further reducing the resistance of the far-infrared coating 32 in the current path. Under similar resistance conditions, the thickness of the far-infrared coating 32 according to this embodiment can be made thinner, further reducing costs and improving the market competitiveness of the low-temperature bake smoking device according to this embodiment.

[0065] In some other embodiments, the far-infrared coating 32 may be divided into six, eight, or ten parts in the circumferential direction of the heating substrate 31 to conduct current, and it will be understood that the distance that the current flows through the far-infrared coating 32 is further shortened.

[0066] Although the specification and drawings of the present invention disclose preferred embodiments of the present invention, it should be understood that the present invention may be realized in various forms and is not limited to the embodiments described herein. These embodiments are not intended to further limit the content of the present invention, but are provided to make the disclosure of the present invention more detailed and complete. Various embodiments not listed above that further combine the respective technical features described above are all included in the scope of the specification of the present invention. Furthermore, those skilled in the art may make improvements and modifications based on the above description, and all of these improvements and modifications should be included in the scope of protection of the claims described in the present invention. [Explanation of symbols]

[0067] 1...housing, 11...main body, 12...upper cover, 13...lower cover, 2...holder, 3...heating assembly, 30...fixed base, 31...heating substrate, a...first end, b...second end, 32...far-infrared coating, 331, 341, 351, 361...first conductive module, 3511, 3611...first annular portion, 3512, 3612, 3712...first elongated portion, 332, 342, 352, 362...second conductive module, 3521, 3621...second annular portion, 35 22, 3622, 3722...second elongated portion, 333, 363...third conductive module, 3631...third annular portion, 3632, 3732...third elongated portion, 364...fourth conductive module, 3641...fourth annular portion, 3642, 3742...fourth elongated portion, 4...insulating member, 41...insulated inner pipe, 42...insulated outer pipe, 43...sealing plug, 5...power supply unit, 6...control assembly, 61...circuit board, 62...controller, 63...switch button, 7...temperature measuring element.

Claims

1. a heating base having a hollow interior and a heating chamber formed therein for containing a smoke-producing substance, the heating base having a first end and a second end opposite each other; a conductive module provided on an outer surface of the heating base, the conductive module including a first annular portion, a second annular portion, a third annular portion, a first elongated portion, a second elongated portion, a third elongated portion, and a fourth elongated portion; the first annular portion surrounds a first end of the heating substrate, the third annular portion surrounds a second end of the heating substrate, and the second annular portion surrounds the heating substrate and is located between the first annular portion and the third annular portion; the first elongated portion and the second elongated portion are located between the first annular portion and the second annular portion, the first elongated portion and the second elongated portion are provided on an outer surface of the heating base with a gap therebetween, the first elongated portion extends from the first annular portion to the second end, and the second elongated portion extends from the second annular portion to the first end; the third elongated portion and the fourth elongated portion are located between the second annular portion and the third annular portion, the third elongated portion and the fourth elongated portion are provided on an outer surface of the heating base with a gap therebetween, the third elongated portion extends from the third annular portion to the first end, and the fourth elongated portion extends from the second annular portion to the second end; a conductive module in which the first elongated portion and the second elongated portion at least partially overlap each other, and the third elongated portion and the fourth elongated portion at least partially overlap each other in a longitudinal direction of the heating base; a far-infrared coating applied to an outer surface of the heating substrate and positioned between overlapping portions of the first elongated section and the second elongated section and between overlapping portions of the third elongated section and the fourth elongated section; a power supply unit electrically connected to the first annular portion, the second annular portion, and the third annular portion, wherein when the first annular portion and the second annular portion are energized, a current flows through at least a portion of the far-infrared coating along the circumferential direction of the heating base between the first elongated portion and the second elongated portion, and when the second annular portion and the third annular portion are energized, a current flows through at least a portion of the far-infrared coating along the circumferential direction of the heating base between the third elongated portion and the fourth elongated portion, and far-infrared light generated by energizing at least a portion of the far-infrared coating penetrates the heating base and radiates heat to smoke-producing substances in a heating chamber.

2. In the longitudinal direction of the heating base, the length of the first elongated portion is shorter than the distance between the first annular portion and the second annular portion, and no far-infrared coating is applied to the region between the first elongated portion and the second annular portion; In the longitudinal direction of the heating base, the length of the second elongated portion is shorter than the distance between the second annular portion and the first annular portion, and no far-infrared coating is applied to a region between the second elongated portion and the first annular portion; a length of the third elongated portion in a longitudinal direction of the heating base is shorter than a distance between the second annular portion and the third annular portion, and no far-infrared coating is applied to a region between the third elongated portion and the second annular portion; A low-temperature bake type smoking device as described in claim 1, wherein the length of the fourth elongated portion in the longitudinal direction of the heating base is shorter than the distance between the second annular portion and the third annular portion, and no far-infrared coating is applied to the area between the fourth elongated portion and the third annular portion.

3. A low-temperature bake type smoking device as described in claim 1, wherein the conductive module includes N elongated portions extending in the longitudinal direction of the heating base between the first annular portion and the second annular portion, the heating base is divided into N portions spaced apart in the circumferential direction of the heating base by the elongated portions, a far-infrared coating is applied to the outside of the heating base between each two adjacent elongated portions, and when the first annular portion and the second annular portion are energized, the current in the elongated portion flows through the far-infrared coating along the circumferential direction of the heating base and reaches the adjacent elongated portion, wherein N is a positive integer greater than or equal to 2.

4. A low-temperature bake type smoking device as described in claim 1, wherein the conductive module includes M long portions extending in the longitudinal direction of the heating base between the second annular portion and the third annular portion, the heating base is divided into M portions spaced apart in the circumferential direction of the heating base by the long portions, a far-infrared coating is applied to the outside of the heating base between each two adjacent long portions, and when the second annular portion and the third annular portion are energized, the current in the long portion flows through the far-infrared coating along the circumferential direction of the heating base and reaches the adjacent long portion, wherein M is a positive integer greater than or equal to 2.

5. A heating base having a hollow interior and a heating chamber formed therein for accommodating a smoke-producing substance, the heating base having opposing first and second ends; a conductive module provided on an outer surface of the heating base, the conductive module including a first annular portion, a second annular portion, a third annular portion, a fourth annular portion, a first elongated portion, a second elongated portion, a third elongated portion, and a fourth elongated portion; the first annular portion surrounds a first end of the heating substrate, the third annular portion surrounds a second end of the heating substrate, the second annular portion surrounds the heating substrate and is located between the first annular portion and the fourth annular portion, and the fourth annular portion surrounds the heating substrate and is located between the second annular portion and the third annular portion; the first elongated portion and the second elongated portion are located between the first annular portion and the second annular portion, the first elongated portion and the second elongated portion are provided on an outer surface of the heating base with a gap therebetween, the first elongated portion extends from the first annular portion to the second end, and the second elongated portion extends from the second annular portion to the first end; the third elongated portion and the fourth elongated portion are located between the fourth annular portion and the third annular portion, the third elongated portion and the fourth elongated portion are provided on an outer surface of the heating base with a gap therebetween, the third elongated portion extends from the third annular portion to the first end, and the fourth elongated portion extends from the fourth annular portion to the second end; a conductive module in which the first elongated portion and the second elongated portion at least partially overlap each other, and the third elongated portion and the fourth elongated portion at least partially overlap each other in a longitudinal direction of the heating base; a far-infrared coating applied to an outer surface of the heating substrate and positioned between overlapping portions of the first elongated section and the second elongated section and between overlapping portions of the third elongated section and the fourth elongated section; a power supply unit electrically connected to the first, second, third, and fourth annular portions, wherein when the first and second annular portions are energized, a current flows through at least a portion of the far-infrared coating between the first and second elongated portions along the circumferential direction of the heating base, and when the third and fourth annular portions are energized, a current flows through at least a portion of the far-infrared coating between the third and fourth elongated portions along the circumferential direction of the heating base, and far-infrared light generated by energizing at least a portion of the far-infrared coating passes through the heating base and radiates heat to smoke-producing substances in a heating chamber.

6. A low-temperature bake type smoking device described in any one of claims 1 to 5, wherein the first circular portion, the second circular portion, the third circular portion, the first long portion, the second long portion, the third long portion and the fourth long portion are conductively coated.

7. A low-temperature bake type smoking device as described in claim 1 or claim 5, wherein the heating substrate is made of quartz glass, mica or ceramic.

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