An aerosol generating device

Abstract

This application provides an aerosol generating device, belonging to the field of electrically heated novel cigarettes. The aerosol generating device includes a housing and a heat-conducting component. The housing has an air inlet and a receiving cavity for accommodating an aerosol-generated product, which is connected to the air inlet. A tubular heat-insulating component is provided inside the housing, and the heat-conducting component is disposed within and spaced apart from the heat-insulating component. The heat-conducting component is located at one end of the receiving cavity for electrically heating the aerosol-generated product. A preheating zone is formed between the inner surface of the heat-conducting component and the heat-insulating component. An air inlet window is opened on the side surface of the heat-conducting component, and the preheating zone is connected to the air inlet window so that air is drawn into the receiving cavity through the heat-conducting component. The aerosol generating device can quickly heat air to the temperature required for the aerosol-generated product, achieving full utilization of thermal energy, high overall heat conversion efficiency, low heating power of the heat-conducting component, and extended service life of the heat-conducting component.

Description

Technical Field

[0001] This invention application belongs to the field of novel electrically heated cigarettes, specifically relating to an aerosol generating device. Background Technology

[0002] Low-temperature heated non-combustible aerosol generators heat tobacco products at temperatures between 200℃ and 400℃ to create an inhalable aerosol. Due to the low operating temperature, the aerosol generated by this type of device contains relatively low levels of harmful components, which is more beneficial to user health and is therefore popular. Currently, the heating methods for low-temperature non-combustible aerosol generators generally include contact heating and non-contact heating. Non-contact heating refers to heating the air; air-heated non-combustible technology uses heating components to heat the inhaled cold air. The heated air then vaporizes the tobacco product, directly heating it without burning it to produce smoke. This provides a similar satisfaction to cigarettes while reducing the production and inhalation of harmful substances during combustion.

[0003] Existing aerosol generating devices use bottom-inlet air in the heat conductor. Air enters the heat conductor through the bottom and is heated. The heated air then steams and heats the tobacco product, thereby generating hot melt adhesive.

[0004] Bottom-intake design has the following drawbacks: the air entering the heat conductor is not fully heated to the temperature required for baking the tobacco before the tobacco product is properly heated, resulting in a poor smoking experience. Current solutions involve increasing the heating power of the heat conductor to maintain it at a higher operating temperature, thereby raising the temperature of the air inside. However, this leads to shorter lifespan and reduced stability of the heat conductor. Summary of the Invention

[0005] The purpose of this application is to overcome the deficiencies of the prior art and provide an aerosol generating device to solve the problems in the prior art.

[0006] To address the aforementioned problems, this application provides an aerosol generating device, comprising a housing and a heat-conducting component. The housing has an air inlet and a receiving cavity for accommodating an aerosol-generated product. The receiving cavity is connected to the air inlet. A tubular heat-insulating component is provided inside the housing. The heat-conducting component is disposed within the heat-insulating component and spaced apart from it. The heat-conducting component is located at one end of the receiving cavity for electrically heating the aerosol-generated product. A preheating zone is formed between the heat-conducting component and the inner surface of the heat-insulating component. An air inlet window is provided on the side surface of the heat-conducting component. The preheating zone is connected to the air inlet window so that air is drawn into the receiving cavity through the heat-conducting component.

[0007] In one possible implementation, the preheating zone includes a first preheating zone and a second preheating zone, the first preheating zone being disposed along the inner surface of the heat insulation component, and the second preheating zone being disposed on the outer surface of the heat-conducting component, the first preheating zone and the second preheating zone being connected.

[0008] In one possible implementation, the heat-conducting assembly has an upper heat-conducting element and a lower heat-conducting element, the air intake window is opened between the upper heat-conducting element and the lower heat-conducting element, and the second preheating zone is a recessed space on the heat-conducting assembly adjacent to the air intake window.

[0009] In one possible implementation, the heat-conducting component is connected to a fixing member located inside the heat insulation member, the fixing member forming at least a portion of the receiving cavity, and at least a portion of the first preheating zone is formed between the fixing member and the heat insulation member.

[0010] In one possible implementation, the fastener includes a first fastener and a second fastener, the second fastener having a slot that at least partially overlaps with or does not overlap with the projected position of the air intake window.

[0011] In one possible implementation, the lower heat-conducting component has a heat storage cavity at the end away from the first fixed component, and the heat storage cavity, the air inlet, and the preheating zone are connected.

[0012] In one possible implementation, the second fixing component is a tubular body, and the slot is hollowed out on the tubular body.

[0013] In one possible implementation, at least a portion of the space in the second preheating zone is surrounded by the heat-conducting component and the second fixing component.

[0014] In one possible implementation, the heat insulation element is installed within the housing to form an air intake passage, which is connected to the air inlet.

[0015] In one possible implementation, the air intake is connected to the preheating zone such that air enters from the air inlet and flows through the receiving cavity.

[0016] The aerosol generating device in this application includes a housing and a heat-conducting component. A tubular heat insulation component is provided inside the housing, and the heat-conducting component is disposed in the heat insulation component and spaced apart from the heat insulation component.

[0017] When the aerosol generating device is working, the heat-conducting component heats up when energized, and some of the heat is transferred to the preheating zone. During inhalation, air flows through the air inlet, sequentially through the preheating zone and the air inlet window into the heat-conducting component, and finally flows into the receiving cavity. During this process, the preheating zone preheats the air, and then the heat-conducting component reheats the preheated air, causing the air flowing into the receiving cavity to rise rapidly and reach the temperature required to bake the aerosol product. Because the heat-conducting component is housed within the insulation, more of the heat generated by the component is concentrated in the insulation, effectively reducing heat loss and maximizing the utilization of thermal energy.

[0018] The aerosol generating device can quickly heat air to the temperature required for aerosol product generation, achieving full utilization of thermal energy, high overall heat conversion efficiency, low heating power of the heat-conducting components, and extending the service life of the heat-conducting components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of an aerosol generation device is shown;

[0021] Figure 2 It shows Figure 1 Cross-sectional view of the aerosol generation device;

[0022] Figure 2a It shows Figure 2 A magnified view of a portion of the image;

[0023] Figure 3 A schematic diagram of a thermally conductive component is shown;

[0024] Figure 4 It shows Figure 3 Cross-sectional view of the central thermal conductive component;

[0025] Figure 5 A schematic diagram of a fastener is shown;

[0026] Figure 6 A schematic diagram of a second fixing component is shown.

[0027] Explanation of key component symbols:

[0028] 100-Housing; 101-Air inlet; 102-Receiving cavity; 103-Open end; 110-Power supply; 200-Heat insulation; 300-Heat conduction component; 301-Air inlet window; 310-Heating element; 320-Upper heat conduction component; 321-Air outlet; 330-Lower heat conduction component; 3301-Groove structure; 331-Heat storage cavity; 341-First air passage; 342-Second air passage; 343-Third air passage; 400-Preheating zone; 401-First preheating zone; 402-Second preheating zone; 500-Fixing component; 510-First fixing component; 511-First sealing component; 520-Second fixing component; 521-Slot; 522-Boss; 600-Base; 601-Second sealing component. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] Example

[0031] See Figure 1 , Figure 2 and Figure 2a In this embodiment, an aerosol generating device is proposed, including a housing 100 and a heat-conducting component 300. The housing 100 has an air inlet 101 and a receiving cavity 102 for accommodating an aerosol-generated product, and the receiving cavity 102 is connected to the air inlet 101. A tubular heat insulation component 200 is provided inside the housing 100, and the heat-conducting component 300 is disposed in the heat insulation component 200 and spaced apart from the heat insulation component 200. The heat insulation component 200 is installed inside the housing 100 and forms an air inlet channel with the housing 100, and the air inlet channel is connected to the air inlet 101.

[0032] A heat-conducting component 300 is disposed within the heat insulation component 200 and corresponds to the receiving cavity 102. Specifically, the heat-conducting component 300 is located at one end of the receiving cavity 102 for electrically heating the air flowing through it, thereby heating the aerosol-generated product. The heat-conducting component 300 and the inner surface of the heat insulation component 200 form a preheating zone 400. An air inlet is connected to the preheating zone 400 so that air enters from the air inlet 101 and flows through the receiving cavity 102. Specifically, an air inlet window 301 is opened on the side surface of the heat-conducting component 300, and the preheating zone 400 is connected to the air inlet window 301 so that air is drawn into the receiving cavity 102 through the heat-conducting component 300.

[0033] The air inlet 101 of the aerosol generating device can be located at the top of the housing 100. Air flows into the air intake duct inside the housing 100 through the air inlet 101. The number of air inlets 101 can be set to one or more as needed. The aerosol generating device includes a device body and a housing, charging interface, controller, and power switch 110 housed within the device body. The power supply 110 is located inside the housing 100. The charging interface is used to charge the power supply 110, and the power switch 110 is used to control the power supply 110 to turn on and off. The heat-conducting component 300 includes a heating circuit. The power supply 110 is electrically connected to the heating circuit. When the power switch is turned on, the internal controller is activated, controlling the power supply 110 to supply power. The power supply 110 supplies power to the heating circuit, causing the heat-conducting component 300 to heat up. The heat generated by the heat-conducting component 300 is transferred to its interior and surrounding area. Preferably, the heat-conducting component 300 is a resistance heater, which can not only conduct heat but also actively generate heat.

[0034] When the aerosol generating device is working, the heat generated by the heat-conducting component 300 heats the air inside the heat-conducting component 300, and the remaining heat is transferred to the preheating zone 400 to preheat the air inside the preheating zone 400. During the user's inhalation, air flows through the air inlet 101, through the air passage, through the preheating zone 400, into the air inlet window 301, and into the receiving cavity 102. The air in the preheating zone 400 enters the heat-conducting component 300 through the air inlet window 301 and is directly heated by the heating element 310. This causes the temperature inside the receiving cavity 102 to rise rapidly, baking the aerosol generating product to produce aerosol for the user to inhale. Because the heat-conducting component 300 is located in the heat insulation component 200, more of the heat generated by the heat-conducting component 300 can be concentrated in the heat insulation component 200, which can effectively reduce heat loss and achieve full utilization of thermal energy.

[0035] The preheating zone 400 includes a first preheating zone 401 and a second preheating zone 402. The first preheating zone 401 is disposed along the inner surface of the heat insulation component 200, and the second preheating zone 402 is disposed on the outer surface of the heat-conducting component 300. The first preheating zone 401 and the second preheating zone 402 are connected. During the airflow process, the air flows through the first preheating zone 401 and the second preheating zone 402 in sequence and is preheated twice, thereby achieving a rapid increase in temperature.

[0036] like Figure 3 and Figure 4As shown, in this embodiment, the heat-conducting component 300 has a heat-conducting body, which includes a heating element 310, an upper heat-conducting element 320, and a lower heat-conducting element 330. The heating element 310 includes a ceramic cylinder and heating circuits, which can be disposed on the outer side of the ceramic cylinder. The upper heat-conducting element 320 and the lower heat-conducting element 330 are provided with central holes for the ceramic cylinder to pass through. A first air passage 341 is formed between the outer wall of the upper heat-conducting element 320 and the inner surface of the lower heat-conducting element 330. A second air passage 342 is formed between the bottom of the upper heat-conducting element 320 and the lower heat-conducting element 330. A third air passage 343 is formed between the inner wall of the central hole of the upper heat-conducting element 320 and the heating element. The first air passage 341, the second air passage 342, and the third air passage 343 are connected sequentially. These three passages are not located on the same straight line. This structure increases the airflow path when heating air, ensuring that the air flowing through the heat-conducting component 300 is fully heated. Specifically, the first air passage 341 is connected to the air inlet window 301, and the third air passage 343 is connected to the air outlet 321.

[0037] An air intake window 301 is located between the upper heat-conducting component 320 and the lower heat-conducting component 330. The upper heat-conducting component 320 has an air outlet 321. The second preheating zone 402 is a recessed space on the heat-conducting component 300 adjacent to the air intake window 301. Figure 3 As shown, the top of the lower heat-conducting component 330 is provided with a groove structure 3301, which forms a recess and thus creates a second preheating zone 402. After being preheated by the preheating zone 400, the air flows into the heat-conducting component 300 through the air inlet window 301 and is heated by the heating element 310 of the heat-conducting component 300. Subsequently, it flows into the receiving cavity 102 through the air outlet 321 to achieve baking and heating of the aerosol-generated product.

[0038] In some embodiments, the diameter of the vent 321 is smaller than the diameter of the inlet window 301, thereby controlling the outflow of air so that the air entering the heat-conducting component 300 is sufficiently heated before flowing out of the vent 321.

[0039] To secure the heat-conducting component 300, the heat-conducting component 300 is connected to a fixing member 500 located inside the heat insulation member 200, and the heat-conducting component 300 is surrounded and supported by the fixing member 500. The fixing member 500 forms at least a portion of the receiving cavity 102, and at least a portion of the first preheating zone 401 is formed between the fixing member 500 and the heat insulation member 200.

[0040] like Figure 5As shown, the fastener 500 includes a first fastening sub-component 510 and a second fastening sub-component 520. The first fastening sub-component 510 and the second fastening sub-component 520 are made of high-temperature resistant materials (150°C and above), such as aluminum alloy, stainless steel, ceramic and other metallic or non-metallic materials.

[0041] The second fixing component 520 has a slot 521, which is fitted onto the lower heat-conducting component 330. The slot 521 may or may not overlap with the projected position of the air inlet window 301. The number of slots 521 can be set to one or more as needed. The second fixing component 520 is a tubular body, and the slot 521 is hollowed out on the tubular body. At least a portion of the space of the second preheating zone 402 is surrounded by the heat-conducting component 300 and the second fixing component 520.

[0042] In this embodiment, the first preheating zone 401 is formed between the second fixing component 520 and the heat insulation component 200, and the second preheating zone 402 is formed between the upper heat-conducting component 320 and the second fixing component 520. Both the heat-conducting component 300 and the second fixing component 520 have high thermal conductivity, enabling the upper heat-conducting component 320 and the second fixing component 520 to quickly transfer the heat generated by the heating component 310, thereby preheating the air flowing through the second fixing component 520 and the upper heat-conducting component 320.

[0043] Both the second fixing component 520 and the heat insulation component 200 are hollow cylindrical structures, thus forming an annular first preheating zone 401. The outer surface of the upper heat-conducting component 320 is cylindrical, and part of the upper heat-conducting component 320 extends into the second fixing component 520, thus forming an annular second preheating zone 402.

[0044] The preheated air in the preheating zone 400 flows through the slot 521 to the side wall of the heat conduction component 300, and then flows into the heat conduction component 300 through the air inlet window 301. When the projected positions of the slot 521 and the air inlet window 301 do not overlap, the air flowing through the slot 521 will first pass through the side wall of the heat conduction component 300 and absorb the heat from the side wall of the heat conduction component 300 before flowing to the air inlet window 301. During this process, the air temperature will be further increased, improving the efficiency of heating the air. When the projected positions of the slot 521 and the air inlet window 301 overlap, part of the air flowing through the slot directly enters the heat conduction component 300 through the air inlet window 301, and the remaining part passes through the side wall of the heat conduction component 300, absorbs the heat from the side wall of the heat conduction component 300, and then enters the heat conduction component 300 through the air inlet window 301.

[0045] The area of ​​the slot 521 is greater than or equal to the area of ​​the air inlet window 301, thereby controlling the air intake of the heat conduction component 300 so that the air entering the heat conduction component 300 can be fully heated, avoiding uneven or insufficient heating due to excessive air intake.

[0046] The top surface of the slot 521 is not higher than the top surface of the heat-conducting component 300, and the bottom surface of the slot 521 is not lower than the bottom surface of the heat-conducting component 300. In this way, when air flows from the slot 521 to the air inlet window 301 of the heat-conducting component 300, the air will not flow directly across the heat-conducting component 300, thereby enabling the air to absorb heat from the outer wall of the heat-conducting component 300.

[0047] The first fixing component 510 is sleeved on the upper heat-conducting component 320, and extends upward to the opening end 103 of the housing 100 to form a receiving cavity 102 for accommodating the aerosol-generated product. Specifically, the area of ​​the first fixing component 510 sleeved on the upper heat-conducting component 320 is smaller than the area of ​​the second fixing component 520 sleeved on the lower heat-conducting component 330. This structure can reduce the heat absorbed by the first fixing component 510 from the heat-conducting assembly 300.

[0048] To secure the lower heat-conducting component 330, it is mounted on the inner surface of the second fixing component 520. For example... Figure 6 As shown, the second fixing component 520 has a boss 522 inside. The outer wall of the lower heat conductor 330 abuts against the boss 522 and forms a sealing structure, thereby preventing air from entering the bottom of the lower heat conductor 330 from the slot 521 of the second fixing component 520, thus restricting the airflow and preventing heat loss.

[0049] When the heat-conducting component 300 is powered on, the heat it generates is transferred to the surrounding area. To fully utilize the heat, the lower heat-conducting component 330 has a heat storage cavity 331 at the end away from the first fixed sub-component 510. The heat storage cavity 331, the air inlet 101, and the preheating zone 400 are connected. Some of the heat generated by the heat-conducting component 300 is transferred to the heat storage cavity 331, heating the air inside the heat storage cavity 331, thereby achieving the purpose of heat storage. As the air flows, the hot air in the heat storage cavity 331 flows into the preheating zone 400, and then flows into the heat-conducting component 300 through the slot 521 and the air inlet window 301 to be reheated, achieving rapid heating of the air.

[0050] like Figure 2a As shown, the outer wall of the first fixing component 510 is provided with a first sealing component 511. The first sealing component 511 is used to seal the gap between the heat insulation component 200 and the first fixing component 510 to prevent air from flowing out from the gap between the heat insulation component 200 and the first fixing component 510 and taking away the heat, thus causing heat loss.

[0051] A base 600 is provided below the bottom of the heat insulation component 200. The base 600 is used to fix the second fixing component 520. There is an air gap between the base 600 and the bottom of the heat insulation component 200. The air flowing in from the air inlet 101 flows through the airflow channel between the inner surface of the housing 100 and the outer wall of the heat insulation component 200 and the air gap between the base 600 and the heat insulation component 200. Part of the air flows into the preheating zone 400 and part flows into the heat storage chamber 331. The second fixing component 520 and the base 600 can be fixedly connected by means of plugging, bonding, snapping, etc. For example, the bottom of the second fixing component 520 is provided with a plug-in post, and the base 600 is provided with a plug-in hole. The plug-in post is inserted into the plug-in hole, thereby realizing the fixed connection between the second fixing component 520 and the base 600.

[0052] like Figure 2a As shown, a second sealing element 601 is provided on the outer side wall of the base 600. The second sealing element 601 is used to seal the gap between the housing 100 and the base 600, thereby preventing air from flowing out from the gap between the housing 100 and the base 600 and taking away heat, thus causing heat loss.

[0053] In this embodiment, both the first seal 511 and the second seal 601 can be sealing rings.

[0054] In the aerosol generating device of the present invention, the air flow direction is as follows: the air flowing in from the air inlet 101 flows through the airflow channel between the inner surface of the housing 100 and the outer wall of the heat insulation component 200 and the air passage gap between the base 600 and the heat insulation component 200. Most of the air enters the preheating zone 400, and then flows through the slot 521, the air inlet window 301 and the interior of the heat conduction component 300 in sequence, and flows into the receiving cavity 102; a small part of the air enters the heat storage cavity 331. When the aerosol generating device is working, the power switch is turned on, the internal controller is activated, and the power supply is controlled. The power supply 110 supplies power to the heating circuit, causing the heat-conducting component 300 to heat up. The heat generated by the heat-conducting component 300 heats the air inside the heat-conducting component 300. The remaining heat is transferred to the preheating zone 400 and the heat storage chamber 331, thereby preheating the air in the first preheating zone 401, the second preheating zone 402, and the heat storage chamber 331. During the user's inhalation, the air in the first preheating zone 401, the second preheating zone 402, and part of the heat storage chamber 331 is drawn into the heat-conducting component 300 through the air inlet window 301, and then the heating element 310 directly heats the air to bake the aerosol generating product to produce aerosol for the user to inhale. When suction stops, some of the air in the heat storage chamber 331 remains in the heat storage chamber 331, while some enters the preheating zone 400. At the same time, air flows in from the air inlet 101 to prepare for the second suction, thus forming a thermal cycle during suction and greatly improving the heat conversion rate of the heat conduction component 300. By setting the upper heat conduction component 320 and the lower heat conduction component 330, the first flow channel 341, the second flow channel 342 and the third flow channel 343 are formed, increasing the airflow path when heating air, so that the air flowing through the heat conduction component 300 can be fully heated and the heating efficiency is improved. By setting the heat insulation component 200, the first sealing component 511 and the second sealing component 601, heat loss is effectively reduced, ensuring the service life of the device and enabling sustainable long-term operation.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An aerosol generating apparatus, comprising a housing and a heat-conducting component, wherein the housing has an air inlet and a receiving cavity for accommodating an aerosol-generated product, the receiving cavity being connected to the air inlet, characterized in that, The housing is provided with a tubular heat insulation component, and the heat-conducting component is disposed in the heat insulation component and spaced apart from the heat insulation component. The heat-conducting component is located at one end of the receiving cavity and is used to electrically heat the aerosol generating product. A preheating zone is formed between the heat-conducting component and the inner surface of the heat insulation component. An air inlet window is opened on the side surface of the heat-conducting component. The preheating zone is connected to the air inlet window so that air is drawn into the receiving cavity through the heat-conducting component. The preheating zone includes a first preheating zone and a second preheating zone. The first preheating zone is disposed along the inner surface of the heat insulation component, and the second preheating zone is disposed on the outer surface of the heat-conducting component. The first preheating zone and the second preheating zone are connected. The heat-conducting component has an upper heat-conducting element and a lower heat-conducting element, and the air intake window is opened between the upper heat-conducting element and the lower heat-conducting element. The second preheating zone is a recessed space on the heat-conducting component adjacent to the air intake window.

2. The aerosol generating apparatus as described in claim 1, characterized in that, The heat-conducting component is connected to a fixing member located inside the heat insulation member, the fixing member forming at least a portion of the receiving cavity, and at least a portion of the first preheating zone is formed between the fixing member and the heat insulation member.

3. The aerosol generating apparatus as described in claim 2, characterized in that, The fixing component includes a first fixing sub-component and a second fixing sub-component. The second fixing sub-component has a slot, and the slot may or may not overlap with the projected position of the air intake window.

4. The aerosol generating apparatus as described in claim 3, characterized in that, The lower heat-conducting component also has a heat storage cavity at the end away from the first fixed sub-component, and the heat storage cavity, the air inlet, and the preheating zone are connected.

5. The aerosol generating apparatus as described in claim 3, characterized in that, The second fixing component is a tubular body, and the slot is hollowed out on the tubular body.

6. The aerosol generating apparatus as described in claim 5, characterized in that, At least a portion of the space in the second preheating zone is surrounded by the heat-conducting component and the second fixing component.

7. The aerosol generating apparatus according to any one of claims 1-6, characterized in that, The heat insulation component is installed inside the housing and forms an air intake passage with the housing, and the air intake passage is connected to the air inlet.

8. The aerosol generating apparatus as described in claim 7, characterized in that, The air intake is connected to the preheating zone so that air enters from the air inlet and flows through the receiving cavity.

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