Heating assembly and heating device

Abstract

A heating assembly and a heating device. The heating assembly is tubular. The heating assembly comprises a heat-equalizing layer, a first insulating layer, a heating layer, and a second insulating layer which are sequentially arranged from inside to outside; the heat-equalizing layer comprises a plurality of heat-equalizing members spaced apart from each other in the length direction of the heating assembly; the heating layer comprises a plurality of heating members spaced apart from each other in the length direction of the heating assembly; and the plurality of heat-equalizing members are in one-to-one correspondence to the plurality of heating members.

Description

Heating components and heating devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 29, 2024, with application number 202420221739.4 and utility model name “Heating component and heating device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electronic smoking devices, and in particular to a heating component and a heating device. Background Art

[0003] Traditional cigarettes, ignited by open flames, produce tobacco smoke, which is harmful to the human body. Heat-not-burn smoking devices are currently available on the market, primarily those with ambient heating. However, these devices typically utilize a segmented heating system, heating one section before heating the next, to ensure rapid and stable smoke production. Technical issues

[0004] Since the various sections are connected together, when one section is heated at high temperature, the temperature of the other sections that do not need to be heated will rise due to heat conduction, which significantly reduces the effect of segmented heating. Technical Solutions

[0005] In the first aspect, the present application provides a heating component, which is tubular and includes a heat-averaging layer, a first insulating layer, a heating layer and a second insulating layer arranged in sequence from the inside to the outside. The heat-averaging layer includes a plurality of heat-averaging parts arranged at intervals along the length direction of the heating component. The heating layer includes a plurality of heating parts arranged at intervals along the length direction of the heating component, and the plurality of heat-averaging parts correspond one-to-one to the plurality of heating layers.

[0006] In the second aspect, the present application also provides a heating device, which includes a heating component and a fixing part, and the fixing part is connected to the heating device; the heating component is tubular, and the heating component includes a heat-averaging layer, a first insulating layer, a heating layer and a second insulating layer arranged in sequence from the inside to the outside, the heat-averaging layer includes a plurality of heat-averaging parts arranged at intervals along the length direction of the heating component, and the heating layer includes a plurality of heating parts arranged at intervals along the length direction of the heating component, and the plurality of heat-averaging parts corresponds one-to-one to the plurality of heating layers. Beneficial effects

[0007] The heating component and heating device provided in the embodiments of the present application are tubular. The heating component includes a heat-scaling layer, a first insulating layer, a heating layer and a second insulating layer arranged in sequence from the inside to the outside. The heat-scaling layer includes a plurality of heat-scaling elements arranged at intervals, and the heating layer includes a plurality of heating elements arranged at intervals, and the plurality of heat-scaling elements correspond one to one with the plurality of heating layers. The first insulating layer and the second insulating layer both serve to insulate and support the plurality of heat-scaling elements and the plurality of heating elements. The first insulating layer or the second insulating layer is a poor conductor of heat, so the heat generated by the heating element only acts on the corresponding heat-scaling element and will not be transmitted through the first insulating layer or the second insulating layer, thereby achieving segmented heating and achieving a better heating effect with less energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] FIG1 is a schematic diagram of the first structure of a heating assembly provided in an embodiment of the present application.

[0009] FIG2 is an explosion diagram of FIG1 .

[0010] FIG3 is a schematic diagram of a second structure of a heating assembly provided in an embodiment of the present application.

[0011] FIG4 is a cross-sectional view of the heating assembly along line BB provided in an embodiment of the present application.

[0012] FIG. 5 is a partial schematic diagram of portion F of FIG. 4 .

[0013] FIG6 is a schematic structural diagram of a heat spreader provided in an embodiment of the present application.

[0014] FIG7 is a third structural schematic diagram of the heating component provided in an embodiment of the present application.

[0015] FIG8 is a schematic diagram of the explosion of FIG7 .

[0016] FIG9 is a schematic structural diagram of a heating device provided in an embodiment of the present application.

[0017] FIG10 is a cross-sectional view of the heating device provided in an embodiment of the present application along line AA.

[0018] Implementation Methods of the Application

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0020] Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.

[0021] The present invention provides a heating assembly and a heating device, which have excellent segmented heating effects.

[0022] Please refer to Figure 1 and Figure 2. Figure 1 is a schematic diagram of the first structure of the heating component provided in an embodiment of the present application, and Figure 2 is an exploded schematic diagram of Figure 1.

[0023] An embodiment of the present application provides a heating component 10, which is tubular, that is, the heating component 10 has a hollow structure, and the hollow structure can be loaded with inhalable material or atomized particles to heat the inhalable material or atomized particles. The heating component 10 includes a heat-averaging layer 11, a first insulating layer 12, a heating layer 13 and a second insulating layer 14 arranged in sequence from the inside to the outside. The heat-averaging layer 11 includes a plurality of heat-averaging parts 111 spaced apart along the length direction of the heating component 10. The heating layer 13 includes a plurality of heating parts 131 spaced apart along the length direction of the heating component 10. The plurality of heat-averaging parts 111 corresponds one to one with the plurality of heating parts 131. The first insulating layer 12 and the second insulating layer 14 serve to insulate and support the plurality of heat-averaging parts 111 and the plurality of heating parts 131. The first insulating layer 12 or the second insulating layer 14 is a poor conductor of heat, so the heat generated by the heating element 131 only acts on the corresponding heat-dissipating element 111 and will not be transmitted through the first insulating layer 12 or the second insulating layer 14, thereby realizing segmented heating and achieving better heating effect with less energy.

[0024] The heat-averaging layer 11, the first insulating layer 12, the heating layer 13 and the second insulating layer 14 in the heating component 10 can be wound into a film or sheet structure. The heat-averaging layer 11, the first insulating layer 12, the heating layer 13 and the second insulating layer 14 can be a single-layer or multi-layer film or sheet structure. The thickness of the film or sheet structure ranges from 0.01 to 0.1 mm. Therefore, the mass of the heating component 10 is small and the heat conduction distance of the heating element 131 is short, which can effectively reduce energy loss. In addition, by setting the thickness of the film or sheet structure to be thinner, costs can be saved, and it is conducive to the miniaturization and lightweight development of the heating element. In actual applications, the thickness of the film or sheet structure can be 0.02 mm, 0.05 mm, 0.07 mm or 0.1 mm. The thickness of each layer of the diaphragm or film can be the same or different, and can be set according to actual needs and process conditions.

[0025] In this embodiment, the heat-scaling layer 11 preferably adopts a metal or non-metal with high thermal conductivity. For example, the heat-scaling layer 11 is made of one or more of graphite, copper or aluminum. The heat-scaling layer 11 in the embodiment of the present application can adopt a sheet structure made of copper sheet or copper alloy, and the high thermal conductivity of the copper sheet is used to enable the heat-scaling layer 11 to quickly transfer the temperature to various parts of the multilayer film to avoid heat concentration. The heat-scaling layer 11 can also adopt a sheet structure made of graphite sheet or graphite alloy containing graphite. In this way, the good horizontal thermal conductivity and bendability of the graphite sheet can be used to facilitate the processing and heat conduction of the heat-scaling layer 11. Of course, the heat-scaling layer 11 can also adopt a sheet structure made of aluminum sheet or aluminum alloy. Aluminum sheet not only has good thermal conductivity, but also has the characteristics of low price and light weight. It is worth noting that the material used in the heat-scaling layer 11 is not limited to the above materials. It can adopt other metals or alloys with high thermal conductivity, which are not listed here one by one.

[0026] Since the heat-dissipating layer 11 is the innermost layer, the heat-dissipating layer 11 not only distributes heat, but also supports other structures of the heating component 10 and determines the volume of the hollow structure of the heating component 10 .

[0027] Please refer to Figures 3 to 5. Figure 3 is a second structural schematic diagram of the heating component provided in an embodiment of the present application. Figure 4 is a cross-sectional view of the heating component provided in an embodiment of the present application along BB. Figure 5 is a partial schematic diagram of part F of Figure 4.

[0028] In some embodiments, the first insulating layer 12 and the second insulating layer 14 are made of an insulating material. The first insulating layer 12 and the second insulating layer 14 isolate the heating layer 13 from the conductive film layer to prevent short circuits. The first insulating layer 12 and the second insulating layer 14 can be made of the same material or different materials. The material of the first insulating layer 12 and / or the second insulating layer 14 can be polyimide (PI). Polyimide has excellent insulation properties, is a poor conductor of heat, and is easy to make into a thin film structure.

[0029] The first insulating layer 12 disposed between the heat-dissipating layer 11 and the corresponding heating element 131 can prevent the heat-dissipating layer 11 from directly contacting the corresponding heating layer 13 , thereby preventing the heating layer 13 from short-circuiting.

[0030] The thickness of the first insulating layer 12 is 0.01 to 0.1 mm. The thin film in the first insulating layer 12 is a single layer, primarily providing insulation. The thin film in the second insulating layer 14 can be multiple or single layers, for example, 1 to 10 layers, primarily providing insulation and heat isolation.

[0031] The first insulating layer 12 can also be glued to multiple heat spreaders 111 or multiple heating elements 131 to prevent changes in the relative positions of the multiple heat spreaders 111 or multiple heating elements 131. The second insulating layer 14 can also be glued to multiple heating elements 131 to prevent changes in the relative positions of the multiple heating elements 131. The first insulating layer 12 or the second insulating layer 14 plays a supporting role.

[0032] The heating layer 13 is arranged between the first insulating layer 12 and the second insulating layer 14. The material of the heating layer 13 can be a metal material or an alloy material such as stainless steel, and heat is generated by resistive heating. The above-mentioned metal material forms a heating plate (resistor plate). By applying voltage to the heating plate and generating heat, it can be conducted to the heat-dissipating layer 11 with only one layer of the first insulating layer 12. Subsequently, the heat-dissipating layer 11 quickly conducts heat to heat the inhalable material or atomized particles. The entire process has a short path and rapid heating.

[0033] It's worth noting that a TCR (temperature coefficient of resistance) control circuit can be used to control the heating layer 13's temperature. The temperature coefficient of resistance (TCR) represents the relative change in resistance when the temperature changes by 1 degree Celsius, measured in ppm / °C. This principle can be used to control the temperature of the heating layer 13. Furthermore, the TCR control circuit can be used to individually control the temperature of each heating element 131, thereby improving temperature control accuracy.

[0034] It can be seen from the above embodiments that the heating component 10 is composed of a film or sheet structure. According to the heat calculation formula Q=cmt, Q is heat, the unit is J (joule), c is the specific heat capacity, c is a constant, and is related to the substance, m is the mass of the object, and t is the temperature change of the object. In the heating component 10 provided in the embodiment of the present application, the entire structure is a film or sheet, so the mass is small and the heat required to heat to the same temperature is less. The heat-dissipating layer 11 quickly conducts the heat transferred from the heating layer 13 to the entire heat-dissipating layer 11, and the temperature is uniform.

[0035] In addition, the heating layer 13 includes heating elements 131 arranged at intervals, and each heating element 131 can heat the corresponding heat-dissipating element 111. In some embodiments, the heating elements 131 are not connected to each other, so the heat of the heating elements 131 does not affect each other, and the heating effect is achieved with less energy. Because the second insulating layer 14 is arranged outside the heating layer 13, it blocks the channel for heat from the heating layer 13 to be transferred to the outside, that is, heat transfer is reduced, and the heating effect is achieved with less energy.

[0036] In some embodiments, referring to FIG6 , FIG6 is a schematic diagram of the structure of a heat spreader provided in an embodiment of the present application. The heat spreader layer 11 further includes at least one connecting section 112, which is disposed between adjacent heat spreaders 111 and connects two adjacent heat spreaders 111. The connecting section 112 can support adjacent heat spreaders 111 to fix the relative positions of the adjacent heat spreaders 111.

[0037] In some embodiments, adjacent heat equalizing elements 111 and connecting sections 112 are integrally formed. In this way, during the assembly process, the relative positions of each heat equalizing element 111 can be determined without separately setting the positions of each heating element 131, which can save processes and improve assembly efficiency.

[0038] Furthermore, the contact area between the connecting section 112 and the adjacent heat-dissipating element 111 is small, so the heat transfer is limited, thereby avoiding the mutual influence of the connected heating elements 131 .

[0039] In some embodiments, please refer to FIG. 7 and FIG. 8 , FIG. 7 is a schematic diagram of a third structure of a heating component provided in an embodiment of the present application, and FIG. 8 is an exploded schematic diagram of FIG. 7 .

[0040] The heating assembly 10 further includes a heat insulating layer 15 disposed outside the second insulating layer 14. The heat insulating layer 15 may be made of a material with low thermal conductivity, such as aerogel, to reduce heat transfer or radiation to the outside, thereby improving the heat utilization rate of the heating assembly 10 and reducing heat loss.

[0041] In some embodiments, please continue to refer to Figures 7 and 8. The heating component 10 also includes a reflective layer 16, which is arranged on the outside of the heat insulation layer 15. The material of the reflective layer 16 can be copper, aluminum or silver. The reflective layer 16 can be excited while receiving the heat emitted by the heating layer 13, and then radiate far-infrared rays with a heating effect, assisting the heating component 10 in heating the smokeable material or atomized particles, thereby improving the thermal utilization rate of the heating component 10 and reducing heat loss. Please refer to Figures 9 and 10. Figure 9 is a structural schematic diagram of the heating device provided in an embodiment of the present application, and Figure 10 is a cross-sectional view of the heating device provided in an embodiment of the present application along AA.

[0042] The present application also provides a heating device 100, which includes the aforementioned heating assembly 10 and a fixing member 20 connected to the heating assembly 10. The heating device 100 may be an electronic smoking device. The fixing member 20 can fix the relative positions of various components in the heating assembly 10, thereby improving the reliability of the heating device 100.

[0043] In some embodiments, the fixing member 20 includes a first support member 21 and a second support member 22, each of which is fixed to the ends of the heating assembly 10 along its length. The first support member 21 or the second support member 22 can be made of high-temperature resistant plastic or ceramic. The first support member 21 is mounted on one end of the tubular heating assembly 10 to improve the reliability of the heating device 100. The second support member 22 is provided with an annular groove, into which the other end of the heating assembly 10 is snapped.

[0044] Specifically, referring to FIG. 10 , the heating assembly 10 may include a heat-spreading layer 11, a first insulating layer 12, a heating layer 13, a second insulating layer 14, a heat-insulating layer 15, and a reflective layer 16. For details, please refer to the above embodiment. The first support member 21 and the second support member 22 are respectively sleeved on the tubular heat-spreading layer 11, the first insulating layer 12, the heating layer 13, the second insulating layer 14, and the heat-insulating layer 15. The reflective layer 16 is disposed on the outside of the heat-insulating layer 15. Thus, the first support member 21, the second support member 22, and the reflective layer 16 disposed at both ends and around the periphery of the heating assembly 10 serve to secure the internal structure of the heating assembly 10, thereby improving the reliability of the heating device 100.

[0045] The heating component 10 and the heating device 100 provided in the embodiment of the present application are tubular. The heating component 10 includes a heat-averaging layer 11, a first insulating layer 12, a heating layer 13 and a second insulating layer 14 arranged in sequence from the inside to the outside. The heat-averaging layer 11 includes a plurality of heat-averaging elements 111 arranged at intervals, and the heating layer 13 includes a plurality of heating elements 131 arranged at intervals, and the plurality of heat-averaging elements 111 correspond one to one with the plurality of heating layers 13. The first insulating layer 12 and the second insulating layer 14 both play the role of insulating and supporting the plurality of heat-averaging elements 111 and the plurality of heating elements 131. The first insulating layer 12 or the second insulating layer 14 is a poor conductor of heat, so the heat generated by the heating element 131 only acts on the corresponding heat-averaging element 111, and will not be transmitted through the first insulating layer 12 or the second insulating layer 14, so that segmented heating can be achieved, and better heating effect can be achieved with less energy.

[0046] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0047] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0048] The above describes in detail the heating assembly and heating device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application. Furthermore, those skilled in the art may vary the specific implementation methods and scope of application based on the concepts of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. A heating component, which is tubular and includes a heat-sparing layer, a first insulating layer, a heating layer, and a second insulating layer arranged in sequence from the inside to the outside. The heat-sparing layer includes a plurality of heat-sparing parts arranged at intervals along the length of the heating component. The heating layer includes a plurality of heating parts arranged at intervals along the length of the heating component, and the plurality of heat-sparing parts correspond one-to-one to the plurality of heating layers.

2. The heating assembly according to claim 1, wherein The heat-dissipating layer, the first insulating layer, the heat-generating layer or the second insulating layer is a thin film structure.

3. The heating assembly according to claim 2, wherein The first insulating layer is a single-layer structure.

4. The heating assembly according to claim 3, wherein The thickness of the first insulating layer is 0.01 to 0.1 mm.

5. The heating assembly according to claim 2, wherein The material of the first insulating layer or the second insulating layer is polyimide.

6. The heating assembly according to claim 2, wherein The first insulating layer is a single-layer structure, and the material of the first insulating layer is polyimide.

7. The heating assembly according to claim 1, wherein The heat-scaling layer further includes at least one connecting section, which is disposed between adjacent heat-scaling elements and is connected to two adjacent heat-scaling elements.

8. The heating assembly according to claim 7, wherein The adjacent heat equalizing members and the connecting section are integrally formed.

9. The heating assembly according to claim 1, wherein It also includes a heat insulation layer, which is arranged on the outside of the second insulating layer.

10. The heating assembly according to claim 9, wherein It also includes a reflective layer, which is arranged on the outer side of the heat insulation layer.

11. A heating device, comprising a heating component and a fixing part, wherein the fixing part is connected to the heating device; the heating component is tubular, and comprises a heat-averaging layer, a first insulating layer, a heating layer and a second insulating layer arranged in sequence from the inside to the outside; the heat-averaging layer comprises a plurality of heat-averaging parts arranged at intervals along the length direction of the heating component; the heating layer comprises a plurality of heating parts arranged at intervals along the length direction of the heating component, and the plurality of heat-averaging parts corresponds one-to-one to the plurality of heating layers.

12. The heating device according to claim 11, wherein The fixing member includes a first supporting member and a second supporting member, and the first supporting member and the second supporting member are respectively fixed to two ends of the heating component along the length direction of the heating component.

13. The heating device according to claim 12, wherein The second support member is provided with an annular groove, and the annular groove is engaged with the heating component.

14. The heating device according to claim 11, wherein The heat-dissipating layer, the first insulating layer, the heat-generating layer or the second insulating layer is a thin film structure.

15. The heating device according to claim 14, wherein The first insulating layer is a single-layer structure.

16. The heating device according to claim 15, wherein The thickness of the first insulating layer is 0.01 to 0.1 mm.

17. The heating device according to claim 14, wherein The material of the first insulating layer or the second insulating layer is polyimide.

18. The heating device according to claim 11, wherein The heat-scaling layer further includes at least one connecting section, which is disposed between adjacent heat-scaling elements and is connected to two adjacent heat-scaling elements.

19. The heating device according to claim 18, wherein The adjacent heat equalizing members and the connecting section are integrally formed.

20. The heating device according to claim 11, wherein It also includes a heat insulation layer, which is arranged on the outside of the second insulating layer.

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