Miniaturized heating cigarette smoking set capable of reducing surface temperature

Abstract

The invention discloses a miniaturized heating cigarette smoking set capable of reducing the surface temperature. Comprising a heating cavity used for containing an aerosol generating substance, a heating system arranged in the heating cavity, a battery cell used for providing energy for the heating system, a control system used for connecting and controlling the heating system and the battery cell, and a supporting system used for fixing all parts and facilitating holding of a user. The supporting system is provided with a heat insulation area for reducing outward diffusion of heat in the heating cavity on the outer side of the heating cavity, and a heat conduction system which is connected with the heating system and the heating cavity and conducts and dissipates heat generated by the heating system and the heating cavity is arranged in the portion, used for being held by a user, of the supporting system. The device serves as a portable electronic product, the portability of the device requires that the size of the product is as small as possible, and the device strives to achieve balance in demand contradictions by reducing the surface temperature of the product through the design of heat insulation, heat conduction and heat dissipation in a small product space.

Description

A miniaturized heated cigarette device with reduced surface temperature Technical Field

[0001] This invention relates to the field of tobacco heating cigarette devices, and in particular to a miniaturized heated cigarette device that reduces surface temperature. Background Technology

[0002] Heated cigarette devices are appliances that convert electrical energy into heat energy to heat aerosol-producing materials for a specific period of time, causing the materials to generate aerosols. During the heating process, because the aerosol-producing materials can generate aerosols at temperatures far below their ignition point, they release fewer harmful substances compared to aerosols produced by traditional cigarettes, making them widely accepted by consumers abroad. As a portable consumer product, miniaturization and portability are inevitable trends in its development. However, because its core function is to provide heat to the aerosol-producing materials, some of this heat is transferred to the surface of the product that the user touches, leading to excessively high surface temperatures and negatively impacting the user experience. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a miniaturized heated cigarette device with heat insulation, heat conduction, and heat dissipation design to reduce the surface temperature of the product. It is applied to heated cigarette devices with a smaller overall size and is used in conjunction with aerosol-generating cigarette sticks to produce inhalable aerosols.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a miniaturized heated cigarette device for reducing surface temperature, comprising a heating chamber for accommodating aerosol generation, a heating system disposed within the heating chamber, a battery cell for providing energy to the heating system, a control system for connecting and controlling the heating system and the battery cell, and a support system for fixing the various components and facilitating user gripping. The support system has a heat insulation zone on the outside of the heating chamber to reduce the outward diffusion of heat from the heating chamber, and a heat conduction system connected to the heating system and the heating chamber and conducting heat dissipation of the heat generated by the heating system and the heating chamber is disposed within the user gripping part of the support system.

[0005] In this embodiment, the support system includes a shell that comes into contact with the user, a heating cavity support that forms a heating cavity, and an inner support frame that fixes each component. A gap is provided between the outer wall of the heating cavity support and the inner wall of the shell to form a heat insulation zone. The heat insulation zone is filled with a heat insulation layer. A heat conduction system is provided in the gripping end of the shell.

[0006] In this embodiment, the insulation layer is made of a material with a low thermal conductivity, including aerogel, asbestos, cork, foam plastic, inert gas, or vacuum insulation devices.

[0007] In this embodiment, the heating system includes a heating resistor disposed in the middle of the heating cavity and a first bracket and a second bracket coaxially arranged at the bottom of the heating resistor. The heating resistor is clamped and fixed in the first central hole of the heating cavity bracket by the cooperation of the first bracket and the second bracket.

[0008] In this embodiment, the heat conduction system includes a heat conduction bracket. One end of the heat conduction bracket is in close contact with the bottom of the heating cavity bracket and the second bracket, and the other end extends axially toward the gripping end of the outer shell and contacts the inner wall of the outer shell.

[0009] In this embodiment, a gap is provided between the outermost side of the heat-conducting bracket that contacts the heating cavity bracket and the outer shell to form a ring of clearance area.

[0010] In this embodiment, the heat-conducting bracket is provided with a plurality of heat dissipation fins arranged axially and extending in a circumferential direction on the side near the gripping end of the outer shell, and the heat dissipation fins are in contact with the inner wall of the outer shell.

[0011] In this embodiment, the heat-conducting bracket encloses a heat dissipation cavity within the outer shell, and an active heat dissipation device is installed inside the heat dissipation cavity.

[0012] In this embodiment, the active heat dissipation device includes a cooling fan.

[0013] In this embodiment, the active cooling device includes a motor, a first fan, and a second fan. The motor is a dual-output shaft motor with the two output shafts arranged coaxially. A first gearbox and a second gearbox are respectively installed on the two output shafts. A first fan is installed on the output end of the first gearbox, and a second fan is installed on the output end of the second gearbox.

[0014] With the above structure, this device has the following advantages:

[0015] 1. This device employs heat insulation to reduce the temperature of the outer shell in the area where the heating chamber is located. On the other hand, it uses heat conduction to disperse and transfer the heat concentrated in the heating area to a larger surface area of ​​the outer shell, thereby reducing the local temperature of the outer shell and improving the heat dissipation effect. Through the dual means of heat insulation and heat conduction, not only is the heat conduction at the heating chamber with high heat generation reduced, but also the excess heat is conducted to the outer shell-less gripping part. By utilizing the area of ​​the outer shell gripping part, the accumulated heat is dispersed, preventing the local surface temperature from becoming too high.

[0016] 2. The insulation system of this device can be set up to form an insulation zone with a specific spatial gap. The insulation zone is filled with air or filled with an insulation layer with low thermal conductivity and high specific heat capacity. This further delays the time it takes for heat to reach the outer shell during the user's usage period. On the one hand, more energy will be effectively supplied to aerosol generators to ensure energy efficiency. On the other hand, it prevents the outer shell temperature from becoming too high.

[0017] 3. The heat conduction system includes a heat conduction bracket. The heat conduction bracket has multiple heat dissipation fins arranged axially and extending in a circumferential direction on the side near the gripping end of the outer shell. The heat dissipation fins contact the inner wall of the outer shell, so that heat is conducted to the outer shell through the heat dissipation fins. Since the protrusion of the heat dissipation fins reduces the contact area between the outer shell and the heat conduction bracket per unit area, the amount of heat received per unit area is reduced. This increases the total heat dissipation area transferred to the outer shell, avoiding local heat accumulation on the outer shell and causing excessively high local surface temperature.

[0018] 4. The device is also equipped with active heat dissipation equipment in the heat dissipation cavity. When it is necessary to improve the heat conduction effect, the motor is started, which increases the airflow velocity in the area where the heat dissipation cavity is located, forming a pressure difference, thereby distributing the local heat accumulated by the heating system to the entire space of the appliance, and even outside the appliance.

[0019] In summary, as a portable electronic product, the heated cigarette appliance of this application requires the product to be as small as possible in size. This device reduces the surface temperature of the product in a small product space through heat insulation, heat conduction and heat dissipation design, and strives to achieve a balance between the conflicting requirements. Attached Figure Description

[0020] Figure 1 is a structural schematic diagram of Embodiment 1 of the present invention;

[0021] Figure 2 shows the usage state of the present invention after the aerosol generator is inserted;

[0022] Figure 3 is a schematic diagram of the heat conduction direction of the present invention;

[0023] Figure 4 is a schematic diagram of the external structure of the heat-conducting bracket of the present invention;

[0024] Figure 5 is a structural schematic diagram of Embodiment 2 of the present invention.

[0025] In the diagram: 1. Support system; 11. Heating cavity bracket; 12. Outer shell; 13. Inner support frame; 15. Heating cavity; 2. Heating system; 21. Heating resistor; 22. First bracket; 22. Second bracket; 3. Heat insulation layer; 4. Control system; 41. Main circuit board; 42. Flexible circuit board; 43. Electrode circuit board; 44. Charging interface; 45. Button; 46. Button bracket; 5. Battery cell; 6. Heat conduction system; 61. Heat conduction bracket; 611. Heat dissipation fins; 62. Clearance area; 63. Motor; 64. First gearbox; 65. First fan; 66. Second gearbox; 67. Second fan; 7. Aerosol generated. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0028] As shown in Figures 1 to 5, the present invention provides a miniaturized heated cigarette device for reducing surface temperature, including a heating chamber 15 for accommodating aerosol generator 7, a heating system 2 disposed in the heating chamber 15, a battery 5 for providing energy to the heating system 2, a control system for connecting and controlling the heating system 2 and the battery 5, and a support system 1 for fixing the various components of the device and facilitating user gripping. In this embodiment, the aerosol generator 7 refers to the cigarette.

[0029] The support system 1 has a heat insulation layer 3 on the outside of the heating cavity 15 to reduce the outward diffusion of heat from the heating cavity 15. The support system 1 also has a heat conduction system 6 in the grip area for the user, which is connected to the heating system 2 and the heating cavity 15 and conducts heat to dissipate the heat generated by the heating system 2 and the heating cavity 15.

[0030] Example 1:

[0031] This embodiment is applicable to the design of a miniaturized heated cigarette device with extremely compact space. Referring to Figures 1 to 4, the support system 1 of this embodiment includes a shell 12 that comes into contact with the user, a heating chamber support 11 that forms a heating chamber, and an inner support frame 13 that fixes the various components. The shell 12 and the heating chamber support 11 are coaxially arranged, and one end of the heating chamber support 11 is interference-fitted with one end of the inner wall of the shell 12 and the end faces are aligned with each other. The other end of the heating chamber support 11 is a flange end, and the other end of the shell 12 is a grip end. A gap is provided between the outer wall of the heating chamber support 11 and the inner wall of the shell 12 to form a heat insulation zone. The heat insulation zone is filled with a heat insulation layer 3. A heat conduction system 6 is provided in the grip end of the shell 12.

[0032] The heating system 2 includes a heating resistor 21 disposed in the middle of the heating cavity and a first bracket 22 and a second bracket 23 coaxially arranged at the bottom of the heating resistor 21. The flange end of the heating cavity bracket 11 is provided with a first central hole. The outer diameter of the first bracket 22 matches the inner diameter of the first central hole. The center of the first bracket 22 is provided with a second central hole. The outer diameter of the second bracket 23 matches the inner diameter of the second central hole. The bottom of the heating resistor 21 is supported on the second bracket 23. The heating resistor 21 is clamped and fixed in the first central hole of the heating cavity bracket 11 by the cooperation of the first bracket 22 and the second bracket 23.

[0033] The heat conduction system 6 includes a heat conduction bracket 61. One end of the heat conduction bracket 61 is in close contact with the bottom of the heating cavity bracket 11 and the second bracket 23, and the other end extends axially toward the gripping end of the outer shell and contacts the inner wall of the outer shell. A gap is provided between the outermost side of the heat conduction bracket 61 at the end in contact with the heating cavity bracket 11 and the outer shell 12 to form a ring of clearance area 62. The heat conduction bracket 61 is provided with a plurality of heat dissipation fins 611 arranged axially and extending in a circumferential direction on the side near the gripping end of the outer shell. The heat dissipation fins 611 contact the inner wall of the outer shell 12.

[0034] An inner support frame 13 is disposed at the gripping end of the outer shell 12. The inner support frame 13 is used to fix the control system 4. The control system 4 includes a main circuit board 41, an electrode circuit board 43, a charging interface 44, a button 45, and a flexible circuit board 42. The flexible circuit board 42 connects the main circuit board 41, the electrode circuit board 43, and the charging interface 44 to achieve current connection. The button 45 is electrically connected to the main circuit board 41. The button 45 is mounted on the outer shell 12 through a button bracket 46. A battery cell 5 is also installed inside the outer shell 12. The heating resistor 21 and the battery cell 5 are both connected to the main circuit board 41. The main circuit board 41 sequentially fixes and manages the energy output of the battery cell 5 and controls the battery cell 5 to supply power to the heating resistor 21 to achieve heating.

[0035] There are three main ways heat is transferred: heat conduction, heat radiation, and heat convection. In the use of cigarette heating devices, the heating time is usually about four minutes. Considering that the heat transferred to the outer shell 12 during this time period, which causes the temperature rise of the outer shell 12 to be perceived by the consumer, is mainly through heat conduction, this embodiment focuses on how to use heat conduction in the design to reduce the surface temperature rise of the outer shell 12.

[0036] This embodiment mainly reduces the temperature of the surface of the outer casing 12 in two ways.

[0037] 1. Use heat insulation to reduce the temperature of the outer shell in the area where the heating chamber is located:

[0038] After the user places the aerosol generator 7 into the aerosol generator 7 receiving cavity, the heating resistor 21 enters the aerosol generator 7 within the receiving cavity. The user then activates the heating function by pressing button 45. Although most of the heat generated by the heating resistor 21 is transferred to the aerosol generator 7 through thermal conduction, some heat is still conducted through the heating cavity support 11 to the outer shell 12, as shown by the arrow in Figure 3. The portion of the heating resistor 21 that extends into the aerosol generator 7 passes through the aerosol generator 7, the heating cavity support 11, and the insulation layer 3 to the outer shell 12. The heat generated by the remaining portion of the heating resistor 21 is conducted to the outer shell 12 through the first support 22, the second support 23, and the heating cavity support 11.

[0039] The areas with higher temperatures on the outer casing 12 are mainly concentrated in the peripheral area where the heating resistor 21 extends radially towards the outer casing 12, as indicated by the arrow. This application designs locally enclosed gaps in the aforementioned peripheral area, that is, the areas projected radially from the heating resistor 21 to the outer casing 12, and fills these gaps with a heat insulation layer 3. The heat insulation layer 3 is made of a material with low thermal conductivity, including but not limited to aerogel, asbestos, cork, foam plastics (polystyrene foam, polyurethane foam, etc.), inert gases, vacuum insulation devices, etc. The heat insulation layer 3 will significantly slow down the conduction of heat along the shortest straight distance from the heating resistor 21 to the outer casing 12. The distance between the heating resistor's inlet end and the heating cavity support 11 and the outer casing 12 at the inlet end also lengthens the direct heat conduction path, delaying the time it takes for heat to reach the outer casing 12 during the user's usage period.

[0040] By slowing down the heat conduction speed from the heating resistor 21 to the outer casing 12, on the one hand, more energy will be effectively supplied to the aerosol generator 7, ensuring energy utilization efficiency, and on the other hand, preventing the temperature of the outer casing 12 from becoming too high.

[0041] 2. By employing heat conduction, the heat concentrated in the heat-generating area is dispersed and transferred to a larger surface area of ​​the outer casing 12, thereby reducing the local temperature of the outer casing 12 and improving the heat dissipation effect:

[0042] As shown in Figure 3, the heat from the heating cavity support 11 and the second support 23 is conducted to the outer shell 12 through the heat-conducting support 61. The heat-conducting support 61 is made of a material with high thermal conductivity, including but not limited to graphene, graphite, copper, aluminum, gold, silver, etc. One end of the heat-conducting support 61 is in close contact with the bottom of the second support 23 and the heating cavity support 11, and the other end extends axially towards the gripping end of the outer shell.

[0043] As shown in Figure 4, the area of ​​the heat-conducting bracket 61 closest to the heating cavity bracket 11 is the closest area for heat to be directed to the outer shell 12. The outermost part of the heat-conducting bracket 61 that contacts the heating cavity bracket 11 has a gap between it and the outer shell 12 to form a ring of clearance area 62, so that the heat-conducting bracket 61 and the outer shell 12 do not directly contact each other. This area is connected to the heat insulation area, and the heat insulation layer 3 can extend and fill the clearance area 62. This can prevent heat from concentrating in a local area of ​​the outer shell 12 and causing the local temperature of the outer shell 12 to be high.

[0044] The heat-conducting bracket 61 has multiple heat dissipation fins 611 arranged axially and extending in a circumferential direction on the side near the gripping end of the outer shell. The top surface of the heat dissipation fins 611 contacts the inner wall of the outer shell 12, so that heat is conducted to the outer shell 12 through the heat dissipation fins 611. Since the protrusion of the heat dissipation fins 611 reduces the contact area between the outer shell 12 and the heat-conducting bracket 61 per unit area, the amount of heat received per unit area is reduced. This increases the total heat dissipation area of ​​the outer shell 12, avoiding local heat accumulation in the outer shell 12 and causing the local surface temperature to be too high.

[0045] Through the above two structural aspects, and by means of both heat insulation and heat conduction, not only is the heat conduction in the heating cavity with high heat generation reduced, but also the excess heat is conducted to the outer shell gripping part. By utilizing the area of ​​the outer shell gripping part, the accumulated heat is dispersed, preventing the local surface temperature from becoming too high.

[0046] Example 2:

[0047] This embodiment is applicable to product designs with a slightly larger internal space than Embodiment 1, as shown in Figure 5. The difference between this embodiment and Embodiment 1 is that the main circuit board 41 is moved as close as possible to the button 45 side to increase the space between the main circuit board 41 and the heat-conducting bracket 61, so that a heat dissipation cavity is formed between the main circuit board 41 and the heat-conducting bracket 61. An active heat dissipation device is installed in the heat dissipation cavity. The active heat dissipation device includes a motor 63, a first fan 65 and a second fan 67. The motor 63 is a dual-output shaft motor. The two output shafts of the motor 63 are coaxially arranged, and a first gearbox 64 and a second gearbox 66 are respectively installed on the two output shafts. The first fan 65 is installed on the output end of the first gearbox 64, and the second fan 67 is installed on the output end of the second gearbox 66. The motor 63 is connected to the main circuit board 41 and is powered by a battery cell.

[0048] When it is necessary to improve the heat conduction effect, the motor 63 is started to drive the first fan 65 and the second fan 67 to rotate, which increases the airflow speed in the area where the first fan 65 and the second fan 67 are located, forming a pressure difference, thereby distributing the local heat accumulated by the heating system 2 to the entire space of the appliance, and even outside the appliance.

[0049] In this embodiment, if the internal space of the product is limited and there is insufficient space to place the motor 63, a miniature cooling fan can be connected to the main circuit board 41, and the main circuit board 41 can be connected to it. However, the miniature cooling fan needs to be placed close to the heat-generating system 2, and when the fan is working, it should draw air towards the cooler area to form airflow exchange and quickly distribute the heat to a larger space. If there is enough space to place the motor 63, at least one fan can be directly driven by the motor 63, or a gearbox can be added to drive the fan, but at least one fan must be placed near the heating system. When using two fans as shown in Figure 5, they can be directly driven by both ends of the motor 63, so that the two fans have the same speed. In Figure 5, the first gearbox 64 and the second gearbox 66 are driven by both ends of the motor 63, which in turn drive the first fan 65 and the second fan 67 respectively. At the same motor 63 speed, the first fan 65 and the second fan 67 are driven by different reduction ratios of the first gearbox 64 and the second gearbox 66 to achieve different speeds. This is to achieve differentiated hot and cold air exchange in different areas under complex scenarios and obtain the best cooling effect.

[0050] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A miniaturized heated cigarette device for reducing surface temperature, comprising a heating chamber for accommodating aerosol-generating materials, a heating system disposed within the heating chamber, a battery cell for providing energy to the heating system, a control system for connecting and controlling the heating system and the battery cell, and a support system for fixing the various components and facilitating user gripping, characterized in that: The support system has a heat insulation zone on the outside of the heating cavity to reduce the outward diffusion of heat from the heating cavity, and a heat conduction system connected to the heating system and the heating cavity is provided in the grip part of the support system to conduct heat away from the heating system and the heating cavity.

2. The miniaturized heated cigarette device with reduced surface temperature according to claim 1, characterized in that: The support system includes a shell that comes into contact with the user, a heating cavity support that forms a heating cavity, and an inner support frame that fixes the various components. A gap is provided between the outer wall of the heating cavity support and the inner wall of the shell to form a heat insulation zone. The heat insulation zone is filled with a heat insulation layer. A heat conduction system is provided in the gripping end of the shell.

3. The miniaturized heated cigarette device with reduced surface temperature according to claim 2, characterized in that: The insulation layer uses materials with low thermal conductivity, including aerogel, asbestos, cork, foam plastics, inert gases, or vacuum insulation devices.

4. The miniaturized heated cigarette device with reduced surface temperature according to claim 2, characterized in that: The heating system includes a heating resistor disposed in the middle of the heating cavity and a first bracket and a second bracket coaxially arranged at the bottom of the heating resistor. The heating resistor is clamped and fixed in the first central hole of the heating cavity bracket by the cooperation of the first bracket and the second bracket.

5. The miniaturized heated cigarette device with reduced surface temperature according to claim 4, characterized in that: The heat conduction system includes a heat conduction bracket, one end of which is in close contact with the bottom of the heating cavity bracket and the second bracket, and the other end extends axially toward the gripping end of the outer shell and contacts the inner wall of the outer shell.

6. The miniaturized heated cigarette device with reduced surface temperature according to claim 5, characterized in that: The heat-conducting bracket has a gap between its outermost side, which contacts the heating cavity bracket, and the outer shell, forming a ring of clearance.

7. The miniaturized heated cigarette device with reduced surface temperature according to claim 5, characterized in that: The heat-conducting bracket has multiple heat dissipation fins arranged axially and extending along the circumference of the housing on the side near the gripping end of the housing. The heat dissipation fins are in contact with the inner wall of the housing.

8. The miniaturized heated cigarette device for reducing surface temperature according to any one of claims 5 to 7, characterized in that: The heat-conducting bracket encloses a heat dissipation cavity within the outer shell, and an active heat dissipation device is installed inside the heat dissipation cavity.

9. The miniaturized heated cigarette device with reduced surface temperature according to claim 8, characterized in that: The active cooling device includes a cooling fan.

10. The miniaturized heated cigarette device with reduced surface temperature according to claim 9, characterized in that: The active cooling device includes a motor, a first fan, and a second fan. The motor is a dual-output shaft motor with the two output shafts arranged coaxially. A first gearbox and a second gearbox are respectively installed on the two output shafts. A first fan is installed on the output end of the first gearbox, and a second fan is installed on the output end of the second gearbox.

Images