Aerosol-generating device

Abstract

The embodiment of the utility model relates to the technical field of aerosol generating devices, and discloses an aerosol generating device. The aerosol generating device comprises a first shell, a second shell and a heating body. The second shell is arranged in the first shell, and a phase change energy storage layer and a heat insulation layer are arranged between the second shell and the first shell. The heating body is arranged in the second shell and used for heating the aerosol generating product to generate aerosol. In the aerosol generating device, the phase change energy storage layer is made of the phase change energy storage material, and can absorb heat when the temperature is higher than the phase change temperature and release heat when the temperature is lower than the phase change temperature. When the heating body generates a large amount of heat, the phase change energy storage layer begins to absorb heat and begins to release heat after saturation, and heat conducted to the surface of the aerosol generating device is still not too much, so that the surface temperature of the aerosol generating device during use can be reduced, and the probability of discomfort and damage to a user due to too high temperature is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generating devices, and in particular to an aerosol generating device. Background Art

[0002] The aerosol generating device uses heat insulating materials and heat-dissipating materials to reduce its surface temperature. When the structure space of the aerosol generating device is limited, the product surface temperature is still high, resulting in poor user pleasure. Utility Model Content

[0003] The main technical problem solved by the present application is to provide an aerosol generating device capable of reducing the surface temperature of the aerosol generating device.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is to provide an aerosol generating device. The aerosol generating device includes a first shell, a second shell and a heating element. The second shell is arranged inside the first shell, and a phase change energy storage layer and a heat insulation layer are arranged between the second shell and the first shell. The heating element is arranged inside the second shell, and is used to heat the aerosol generating product to generate aerosol.

[0005] In some embodiments, the phase change energy storage layer is a solid-solid phase change material.

[0006] In some embodiments, the solid-solid phase change material is silicone-based or polyurethane-based.

[0007] In some embodiments, the phase change temperature of the solid-solid phase change material is 40-50 degrees.

[0008] In some embodiments, the phase change energy storage layer is disposed away from the heat-generating body relative to the heat-insulating layer.

[0009] In some embodiments, a heat insulation layer and a phase change energy storage layer are sequentially arranged on a surface of the second shell facing the first shell, and an air gap is provided between the phase change energy storage layer and the first shell.

[0010] In some embodiments, a phase change energy storage layer and a heat insulation layer are sequentially arranged on a surface of the second shell facing the first shell, and an air gap is provided between the heat insulation layer and the first shell.

[0011] In some embodiments, a heat-dissipating layer is further disposed between the first shell and the second shell.

[0012] In some embodiments, a phase change energy storage layer, a heat insulation layer and a heat-spreading layer are sequentially arranged from the second shell toward the first shell; or

[0013] A phase change energy storage layer, a heat equalization layer and a heat insulation layer are sequentially arranged from the second shell toward the first shell.

[0014] In some embodiments, the phase change energy storage layer and the thermal insulation layer are stacked.

[0015] The aerosol generating device provided in the embodiment of the present application includes a first shell, a second shell and a heating element. The second shell is arranged inside the first shell, and a phase change energy storage layer and a heat insulation layer are arranged between the second shell and the first shell. The phase change energy storage layer is composed of a phase change energy storage material, which can absorb heat when reaching and above the phase change temperature, and release heat when it is below the phase change temperature. Therefore, when the heating element starts to work and generates heat, the phase change energy storage layer can absorb part of the heat, so that the surface temperature of the aerosol generating device will not rise too high. In addition, even if the phase change energy storage layer starts to release heat after absorbing heat saturation, the heating element has usually completed its work and no longer generates heat, which makes the heat conducted to the surface of the aerosol generating device still not too much, thereby reducing the surface temperature of the aerosol generating device during use, thereby reducing the probability of discomfort and damage to the user due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0017] Figure 2 is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0018] Figure 3 is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0019] Figure 4 is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0020] Figure 5 is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0021] Figure 6 is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application;

[0022] Figure 7 It is a partial cross-sectional schematic diagram of an aerosol generating device provided in one embodiment of the present application.

[0023] Explanation of the accompanying drawings: 100, aerosol generating device; 200, aerosol generating product; 10, battery cell; 20, main board; 30, heating element; 40, chamber; 50, air channel; 1, first shell; 2, second shell; 3, phase change energy storage layer; 4, thermal insulation layer; 5, air gap; 6, heat-dissipating layer. DETAILED DESCRIPTION

[0024] 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. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0025] The terms "first" and "second" in this article are only used for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship. In addition, "many" in this article means two or more than two.

[0026] The following embodiments of the present application describe an exemplary structure of the aerosol generating device 100. Figure 1 As shown, the aerosol generating device 100 includes a battery cell 10, a main board 20 and a heating element 30. The main board 20 is provided with a controller of the aerosol generating device 100. The battery cell 10 and the heating element 30 are electrically connected to the controller respectively, so that the controller can control the battery cell 10 to provide electric energy to the heating element 30. The aerosol generating device 100 is also provided with a longitudinally extending chamber 40, and the chamber 40 is used to accommodate an aerosol generating product 200 used in conjunction with the aerosol generating device 100. The heating element 30 extends into the chamber 40, and its end is configured in a pin shape or a sheet shape, so that the heating element 30 can be inserted into the aerosol generating product 200 for heating. Part of the active material filled in the aerosol generating product 200 is volatilized by heat to generate an aerosol, and the user can inhale the aerosol by inhaling on the aerosol generating product 200.

[0027] The aerosol generating device 100 also includes an air channel 50 connecting the chamber 40 and the external air. When the user inhales on the aerosol generating product 200, the external air enters the chamber 40 through the air channel 50, and further enters the aerosol generating product 200, and then carries the aerosol in the aerosol generating product 200 to escape along the air flow channel in the aerosol generating product 200 for the user to inhale.

[0028] In some embodiments, the heating element 30 is a ceramic heating element, which is a heating element made by sintering an electric heating element and a ceramic at a high temperature and fixing them together. The heating element 30 is directly electrically connected to the controller, and then the controller can control the battery cell 10 to provide electrical energy to the heating element 30. The heating element 30 can generate heat after obtaining the electrical energy.

[0029] Alternatively, in some embodiments, the heating element 30 generates heat by electromagnetic induction. Specifically, an induction coil (not shown) may be wound outside the chamber 40, and the controller controls the battery cell 10 to pass an alternating current into the induction coil. The induction coil generates a changing magnetic field under the action of the alternating current, and the changing magnetic field penetrates the heating element 30 to induce eddy currents in the heating element 30. The heating element 30 generates heat under the action of the eddy current effect and the hysteresis effect, and the aerosol generating product 200 may be heated.

[0030] In order to enable the heating element 30 to induce eddy currents, the material of the heating element 30 can be any one of graphite, molybdenum, silicon carbide, stainless steel, niobium, aluminum, nickel, iron, copper, nickel-containing compounds, titanium, and metal material composites. In some embodiments, in order to better induce eddy currents to improve heating efficiency, the material of the heating element 30 is preferably ferromagnetic material or composed of ferromagnetic materials, such as ferrite iron, ferromagnetic alloys (such as ferromagnetic steel or stainless steel), ferromagnetic particles and ferrites.

[0031] The aerosol generating article 200 preferably uses a tobacco-containing material that releases volatile compounds from the article when heated; or it can also be a non-tobacco material that can be heated and suitable for electric heating to produce smoke. The aerosol generating article 200 preferably uses a solid matrix, which can include one or more of powder, particles, fragments, strips or flakes of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or the solid matrix can contain additional tobacco or non-tobacco volatile flavor compounds to be released when the matrix is ​​heated. Figure 1 and Figure 3 As shown, the aerosol generating device 100 includes a first shell 1, a second shell 2 and a heating element 30. The second shell 2 is arranged inside the first shell 1, and a phase change energy storage layer 3 and a heat insulation layer 4 are arranged between the second shell 2 and the first shell 1. The first shell 1 can be the outer shell of the aerosol generating device 100, and the second shell 2 can be the inner support of the aerosol generating device 100. Alternatively, the first shell 1 can be the outer support of the aerosol generating device 100, and the second shell 2 can be the inner support of the aerosol generating device 100. In this case, the outer shell of the aerosol generating device 100 can also be provided outside the first shell 1. The heating element 30 is arranged inside the second shell 2, and is used to heat the aerosol generating product to generate an aerosol. In other words, the second shell 2 can be used to be arranged around the heating element 30.

[0032] The phase change energy storage layer 3 is composed of phase change energy storage materials, which may include solid-solid phase change materials, solid-liquid phase change materials, liquid-gas phase change materials, liquid-solid phase change materials, etc. Phase change energy storage materials have the following characteristics: releasing or absorbing a large amount of heat during the phase change process; having the characteristics of efficient energy storage, and being able to convert heat into latent heat energy storage during the phase change process, so that a large amount of heat storage can be obtained under the condition of roughly unchanged temperature; the phase change process can be adjusted by changing the temperature, electric field, magnetic field, etc., and has good controllability; it can still maintain good stability after multiple phase changes, and has a long service life and good environmental adaptability. The phase change energy storage layer 3 can absorb heat when it reaches or exceeds the phase change temperature, and release heat when it is lower than the phase change temperature. The heating element 30 located on one side of the second shell 2 generates a large amount of heat when heating the aerosol generating product to generate aerosol, and the temperature of the second shell 2 is increased, so that the temperature of the phase change energy storage layer 3 located on the other side of the second shell 3 facing the heating element 30 increases. When the temperature reaches the phase change temperature of the phase change energy storage layer 3, the phase change energy storage layer 3 can absorb heat to avoid or reduce the heat of the heating element 30 from being transferred to the first shell 1. Therefore, when the heating element 30 starts to work and generates heat, the phase change energy storage layer 3 can absorb part of the heat, so that the surface temperature of the aerosol generating device 100 will not rise too high. In addition, even if the phase change energy storage layer 3 absorbs heat and starts to release heat after saturation, the heating element 30 usually has completed its work and no longer generates heat, which makes the heat conducted to the surface of the aerosol generating device 100 still not too much, thereby reducing the surface temperature of the aerosol generating device 100 during use, thereby reducing the probability of discomfort and damage to the user due to excessive temperature.

[0033] In some embodiments, the phase change energy storage layer 3 is a solid-solid phase change material. As mentioned above, the material of the phase change energy storage layer 3 may include solid-solid phase change material, solid-liquid phase change material, liquid-gas phase change material, liquid-solid phase change material, etc. Among them, the solid-solid phase change material may include polyols (for example, pentaerythritol, neopentyl glycol, trimethylolethane, etc.), inorganic salts (for example, Li2SO4, KHF2, etc.) and organic polymers (for example, high-density polyethylene, etc.). In this embodiment, a solid-solid phase change material is preferably used. The solid-solid phase change material can maintain good matrix properties before and after the phase change, does not liquefy, does not flow, can absorb high-load heat during the phase change process, and can effectively alleviate the short-term temperature rise of the aerosol generating device 100.

[0034] In some embodiments, the phase change temperature of the phase change energy storage material is 40-50 degrees. For example, the phase change temperature of the phase change energy storage material can be 40 degrees, 42 degrees, 43 degrees, 45 degrees, 47 degrees, 48 ​​degrees, 49 degrees, 50 degrees, etc., or a range composed of any of the above values. If the phase change temperature of the phase change energy storage material is relatively low, the phase change energy storage layer 3 starts to absorb energy earlier, and will also absorb saturated energy too early, and it will not be able to play a heat insulation role, but will play a heat conduction role, which will have a negative impact on the temperature of the first shell 1 located on one side. If the phase change temperature is relatively high, the phase change energy storage layer 3 absorbs energy later, and a large amount of heat will be conducted to the first shell 1, making the temperature of the first shell 1 higher.

[0035] In some embodiments, the phase change energy storage material is silicone-based or polyurethane-based. The phase change energy storage layer made of silicone-based or polyurethane-based materials has a high phase change enthalpy value and a high latent heat storage capacity, and can absorb and store a large amount of heat in a short time. In addition, the phase change energy storage layer made of silicone-based or polyurethane-based materials has a small volume change and low cost during the phase change process, so it is very suitable for use in small-volume consumer electronic products such as the aerosol generating device 100.

[0036] In some embodiments, the phase change energy storage layer 3 is arranged away from the heating element 30 relative to the heat insulation layer 4. Since the phase change energy storage material has a limit on the amount of heat it can absorb, the closer the phase change energy storage layer 3 is to the heating element 30, the shorter the time it takes for the phase change energy storage layer 3 to reach the phase change temperature (for example, 44 degrees). If the phase change energy storage layer 3 is arranged close to the heating element 30, and the heating element 30 reaches a certain temperature (for example, 44 degrees) after working for a short time (for example, 1 minute), the phase change energy storage layer 3 begins to absorb heat, and the heat absorption is saturated after a short time (for example, 3 minutes), and the heat immediately begins to be transferred to the first shell 1. If the phase change energy storage layer 3 is arranged far away from the heating element 30, such as Figure 1 As shown, after the heating element 30 has worked for a certain period of time (for example, 5 minutes) and reached a certain temperature (for example, 44 degrees), the phase change energy storage layer 3 begins to absorb heat, and after a certain period of time (for example, 7 minutes), the heat absorption is saturated, and the heat begins to be transferred to the first shell 1. Therefore, by arranging the phase change energy storage layer 3 away from the heating element 30 relative to the heat insulation layer 4, the time for heat to be transferred to the first shell 1 can be delayed, and the heat dissipation requirements of the heating element 30 in the aerosol generating device 100 are met.

[0037] like Figure 3As shown, in some embodiments, a heat insulating layer 4 and a phase change energy storage layer 3 are sequentially arranged on the surface of the second shell 2 facing the side of the first shell 1, and an air gap 5 is provided between the phase change energy storage layer 3 and the first shell 1. The air gap 5 can further play a role in heat insulation. As mentioned above, when the phase change energy storage layer 3 is arranged away from the heating element 30 relative to the heat insulating layer 4, the time for heat to be transferred to the first shell 1 can be delayed. After the air gap 5 is arranged between the phase change energy storage layer 3 and the first shell 1, the phase change energy storage layer 3 absorbs heat and transfers the heat to the air gap 5 first after saturation, and the air gap 5 then transfers the heat to the first shell 1. Therefore, by arranging the air gap 5 between the phase change energy storage layer 3 and the first shell 1, the time for heat to be transferred to the first shell 1 can be further delayed.

[0038] like Figure 4 As shown, in some embodiments, a phase-change energy storage layer 3 and a heat-insulating layer 4 are sequentially arranged on the surface of the second shell 2 facing the first shell 1, and an air gap 5 is provided between the heat-insulating layer 4 and the first shell 1. As mentioned above, the phase-change energy storage layer 3 is arranged close to the heating element 30, and the phase-change energy storage layer 3 absorbs heat to saturation after a short period of time, and then the heat begins to transfer to the heat-insulating layer 4, and the heat-insulating layer 4 transfers the heat to the air gap 5, and the air gap 5 transfers the heat to the first shell 1, which can delay the time for heat to be transferred to the first shell 1. Therefore, by providing an air gap 5 between the heat-insulating layer 4 and the first shell 1, the time for heat to be transferred to the first shell 1 can be further delayed.

[0039] In the above embodiments, by arranging the phase change energy storage layer 3 and the heat insulation layer 4 at different positions and optionally arranging the air gap 5, the heat conduction requirements of the heating body 30 of different models and heating conditions can be met, thereby realizing the diversification of the aerosol generating device 100.

[0040] like Figure 5 As shown, in some embodiments, a heat-scaling layer 6 is further provided between the first shell 1 and the second shell 2. The heat-scaling layer 6 is made of a heat-scaling material, which is used to quickly transfer heat to the position in contact with it. The heat-scaling material can be a graphite sheet, copper foil, aluminum foil and other materials with good thermal conductivity, which quickly transfers the temperature of the heating element 30 to the heat-scaling layer 6 and the position in contact with the heat-scaling layer 6, thereby reducing the speed at which a large amount of heat from the heating element 30 is transferred outward.

[0041] like Figure 5As shown, in some embodiments, a phase change energy storage layer 3, a heat insulation layer 4 and a heat equalization layer 6 are sequentially arranged from the second shell 2 toward the direction close to the first shell 1. In these embodiments, the phase change energy storage layer 3 is arranged close to the second shell 2, so the phase change energy storage layer 3 absorbs heat to saturation after a short period of time, and after the phase change energy storage layer 3 conducts heat to the heat insulation layer 4, the heat insulation layer 4 then conducts heat to the heat equalization layer 6, and the heat equalization layer 6 can quickly conduct heat to the first shell 1, so that the speed of heat transfer from the heating element 30 to the outside can be balanced, so that the speed of heat transfer from the heating element 30 to the outside is controlled within a certain range.

[0042] like Figure 6 As shown, in some embodiments, a phase change energy storage layer 3, a heat equalizing layer 6, and a heat insulating layer 4 are sequentially arranged from the second shell 2 toward the direction close to the first shell 1. In these embodiments, the phase change energy storage layer 3 is arranged close to the second shell 2, so the phase change energy storage layer 3 absorbs heat to saturation after a short period of time, and after the phase change energy storage layer 3 conducts the heat to the heat equalizing layer 6, the heat equalizing layer 6 then quickly conducts the heat to the heat insulating layer 4, and the heat insulating layer 4 then conducts the heat to the first shell, so that the speed of heat transfer from the heating element 30 to the outside can be balanced, so that the speed of heat transfer from the heating element 30 to the outside is controlled within a certain range.

[0043] like Figure 7 As shown, in some embodiments, a heat-averaging layer 6 and an air gap 5 are provided between the first shell 1 and the second shell 2. The heat-averaging layer 6 is made of a heat-averaging material, which will not be described in detail here. The air gap 5 can be provided at a position close to the first shell 1. For example, a phase change energy storage layer 3, a heat insulation layer 4, a heat-averaging layer 6 and an air gap 5 are provided in sequence from the second shell 2 to the direction close to the first shell 1. In these embodiments, the phase change energy storage layer 3 is provided close to the second shell 2, so the phase change energy storage layer 3 absorbs heat to saturation after a short period of time. After the phase change energy storage layer 3 conducts the heat to the heat-averaging layer 6, the heat-averaging layer 6 quickly conducts the heat to the heat insulation layer 4, and the heat insulation layer 4 conducts the heat to the air gap 5, and the air gap 5 conducts the heat to the first shell 1. In the above manner, the speed of heat transfer from the heating element 30 to the outside can be further balanced, so that the speed of heat transfer from the heating element 30 to the outside is controlled within a certain range.

[0044] In other embodiments, the air gap 5 can also be set at other positions. For example, the phase change energy storage layer 3, the insulation layer 4, the air gap 5 and the heat equalization layer 6 are sequentially set from the second shell 2 toward the first shell 1, which will not be repeated here.

[0045] In the above embodiments, by arranging the phase change energy storage layer 3 and the heat insulation layer 4 at different positions, and optionally arranging the air gap 5 and the heat equalization layer 6, the heat conduction requirements of the heating elements 30 of different models and different heating conditions can be further met, thereby further realizing the diversification of the aerosol generating device 100.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments, the phase change energy storage layer 3 and the thermal insulation layer 4 are stacked. The stacking of the phase change energy storage layer 3 and the thermal insulation layer 4 can increase the contact area between the phase change energy storage layer 3 and the thermal insulation layer 4, and accelerate the speed of heat conduction. In some embodiments, the first shell 1, the phase change energy storage layer 3, the thermal insulation layer 4 and the second shell 2 are stacked. In addition to increasing the contact area between the phase change energy storage layer 3 and the thermal insulation layer 4, the contact area with the first shell 1 and the second shell 2 can also be increased, thereby accelerating the speed of heat conduction. In addition, the stacking of the phase change energy storage layer 3 and the thermal insulation layer 4 can reduce the volume of the aerosol generating device 100 and miniaturize the aerosol generating device 100.

[0047] In summary, the aerosol generating device 100 provided in the embodiment of the present application includes a first shell 1, a second shell 2 and a heating element 30. The second shell 2 is arranged inside the first shell 1, and a phase change energy storage layer 3 and a heat insulation layer 4 are arranged between the second shell 2 and the first shell 1. The phase change energy storage layer 3 is composed of a phase change energy storage material, which can absorb heat when it is higher than the phase change temperature and release heat when it is lower than the phase change temperature. Therefore, when the heating element 30 generates a large amount of heat, the phase change energy storage layer 3 begins to absorb heat, so that the surface temperature of the aerosol generating device 100 will not rise too high. In addition, even if the phase change energy storage layer 3 begins to release heat after absorbing heat saturation, the heating element 30 usually completes the work and no longer generates heat, which makes the heat conducted to the surface of the aerosol generating device 100 still not too much, thereby reducing the surface temperature of the aerosol generating device 100 during use, thereby reducing the probability of discomfort and damage to the user due to excessive temperature.

[0048] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An aerosol generating device, characterized in that: include: a first shell; A second shell is arranged inside the first shell, and a phase change energy storage layer and a heat insulation layer are arranged between the second shell and the first shell; as well as The heating element is arranged inside the second shell and is used for heating the aerosol generating product to generate aerosol.

2. The aerosol generating device according to claim 1, characterized in that: The phase change energy storage layer is a solid-solid phase change material.

3. The aerosol generating device according to claim 2, characterized in that: The solid-solid phase change material is silica gel-based or polyurethane-based.

4. The aerosol generating device according to claim 2, characterized in that: The phase change temperature of the solid-solid phase change material is 40-50 degrees.

5. The aerosol generating device according to claim 1, characterized in that: The phase-change energy storage layer is arranged relative to the heat-insulating layer and away from the heating element.

6. The aerosol generating device according to claim 1, characterized in that: The heat insulation layer and the phase-change energy storage layer are sequentially arranged on a surface of the second shell facing the first shell, and an air gap is provided between the phase-change energy storage layer and the first shell.

7. The aerosol generating device according to claim 1, characterized in that: The phase-change energy storage layer and the heat-insulating layer are sequentially arranged on a surface of the second shell facing one side of the first shell, and an air gap is provided between the heat-insulating layer and the first shell.

8. The aerosol generating device according to claim 1, characterized in that: A heat-dissipating layer is further provided between the first shell and the second shell.

9. The aerosol generating device according to claim 8, characterized in that: The phase-change energy storage layer, the heat-insulating layer and the heat-dissipating layer are sequentially arranged from the second shell toward the first shell; or The phase-change energy storage layer, the heat-balancing layer and the heat-insulating layer are sequentially arranged from the second shell toward the first shell.

10. The aerosol generating device according to any one of claims 1 to 9, characterized in that: The phase-change energy storage layer and the heat-insulating layer are stacked.

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