Cigarette heating device

Abstract

The present invention relates to the field of electric tobacco heating devices, and more specifically, relates to a cigarette heating device. The cigarette heating device comprises, sequentially connected, a mouthpiece, a heating chamber, and a base, the top end of the heating chamber being in communication with the mouthpiece. A power supply device is connected to the heating cavity, the power supply device being arranged on the base. The heating cavity comprises a housing and a heating assembly used to heat a tobacco rod. The heating assembly is electrically connected to the power supply device, and the housing encircles the outside of the heating assembly, and the two ends thereof respectively connect to the mouthpiece and the base. The bottom end of the housing is provided with an air channel, the air channel communicating the heating chamber and the external environment, and being used for air to enter and exit the heating chamber. In the design of the present invention, air enters and exits from the bottom end of the heating chamber of the device. The path of the air is short and a sufficient amount of air and smoke are retained, and at the same time, an effective thermal insulation structure is provided to thermally insulate the device. (Fig. 1}

Description

A cigarette heating device Technical Field

[0001] This invention relates to the field of electrically heated tobacco devices, and more specifically, to a cigarette heating device. Background Technology

[0002] Traditional cigarettes burn at very high temperatures, around 900℃. Such high temperatures cause the cigarettes to decompose and release many harmful components. The resulting smoke affects not only the smoker but also those around them, causing health problems and an unpleasant odor. Unlike traditional open-flame cigarettes, which involve intense combustion, this method uses a non-combustible heating device to heat the cigarette, avoiding the high-temperature decomposition and release of harmful components. The resulting smoke contains significantly fewer harmful substances than traditional cigarettes.

[0003] A cigarette heating device is an electronic device that heats and bakes cigarettes, causing their aroma compounds to evaporate and providing a sensation similar to smoking a cigarette. Heating the cigarette requires sufficient air. Existing cigarette heating devices primarily employ two airflow configurations: One is where air enters through the gap between the cigarette and the heating chamber, and the smoke is exhaled through the cigarette. This method cannot guarantee sufficient air and smoke retention, and the cigarette's looseness within the heating chamber affects the smoking experience. The second method involves the airflow path being designed between the inner and outer walls of the heating chamber. Air is supplied through the space between the inner and outer walls near the mouthpiece, reaching the bottom of the chamber, and then entering the cigarette through the tobacco ends. This method results in a long airflow path, complex structure, poor heat insulation, and difficult cleaning, leading to a poor user experience.

[0004] Summary of the Invention

[0005] To overcome the deficiencies of the prior art, the present invention provides a cigarette heating device in which air enters and exits from the bottom of the heating chamber, the air path is short, and sufficient air and smoke reserves can be retained. At the same time, an effective heat insulation structure is provided to insulate the device.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A cigarette heating device includes a mouthpiece, a heating chamber, and a base connected in sequence. The top of the heating chamber is connected to the mouthpiece, and a power supply is connected to the heating chamber, which is located on the base. The heating chamber includes a shell and a heating assembly for heating and baking the cigarette. The heating assembly is electrically connected to the power supply. The shell surrounds the outside of the heating assembly, and its two ends are respectively connected to the mouthpiece and the base. An air passage is provided at the bottom of the shell, which connects the heating chamber to the external environment for air to enter and exit the heating chamber.

[0008] In use, the cigarette is inserted into the heating chamber from the top of the mouthpiece. The heating element heats the cigarette. During heating, air flows in from the air passage at the bottom of the heating chamber and enters the heating element to heat the cigarette. Finally, the smoke is released and drawn out through the cigarette.

[0009] Preferably, an air gap is provided between the heating component and the housing, the width of which ranges from 0.5 to 1.5 mm. Air enters from the air passage at the bottom of the heating chamber, passes through the air gap, and enters the heating component. Additionally, the air gap also serves as a heat insulation effect. Since the heating component reaches a high temperature during heating, leaving an air gap between the heating component and the housing reduces the contact area for solid-to-solid heat transfer, providing air insulation for the heating component and achieving a better heat insulation effect. This prevents the user from feeling excessive heat, improving the user experience.

[0010] Preferably, the heating assembly includes a heating element, a heating base, and a heat insulation element. The heating element is disposed on the top surface of the heating base and is used to insert into the cigarette for heating. The heat insulation element is disposed around the heating element and can accommodate the cigarette. The heat insulation element is detachably connected to the heating base. The heating base and heating element are the main heating components, and the heat insulation element is fitted around the heating element, surrounding and enclosing the cigarette, and is connected and fixed to the housing.

[0011] Preferably, the shell is a hollow structure, and the shell and the heat insulation body are detachably connected. Generally, the shell and the heat insulation body are connected by threads.

[0012] Preferably, the air duct includes a first air hole and a second air hole, with an air buffer cavity between the first and second air holes for buffering air storage. Multiple air ducts are evenly distributed at the bottom of the housing, each duct being divided into a first air hole and a second air hole, with an air buffer cavity added between the two air holes. Air enters through the first air hole, passes through the air buffer cavity, and then enters the heating chamber through the second air hole. The air buffer cavity serves to buffer the air inside the heating chamber from the air in the external environment, ensuring sufficient air storage. Furthermore, the air buffer cavity enhances airflow vortexes, effectively preventing flue gas leakage.

[0013] Preferably, the heat insulation body is provided with a plurality of third air holes, which are evenly distributed around the perimeter and simultaneously connect the air gaps to the inner wall of the heat insulation body. Air enters the air gaps through the air passages and then flows into the heat insulation body through the third air holes to supply heat for the cigarette.

[0014] Preferably, the heat insulation body further includes an expansion cavity for temporarily storing the baking smoke. This expansion cavity is annular and surrounds the outer wall of the cigarette. After the cigarette is baked and heated, it produces smoke for inhalation. The expansion cavity on the outer wall of the cigarette effectively stores the smoke, ensuring consistent flavor even during continuous inhalation. Simultaneously, the expansion cavity expands the smoke mixing space, allowing sufficient room for the smoke to diffuse and mix, thus improving the flavor of the extracted smoke.

[0015] Preferably, the base has a perforated layer for heat insulation, located between the heating chamber and the power supply device, with a height ranging from 1.5 to 3 mm. The perforated layer, positioned between the heating chamber and the power supply device, primarily reduces heat transfer from the heating chamber to the power supply device, preventing overheating and malfunctions. The perforated layer has connecting brackets around its perimeter and a hollowed-out center for air insulation. Specifically, the perforated layer also includes channels for connecting the heating chamber and the power supply device's wiring. Generally, the power supply device includes a rechargeable battery connected in series, a power adapter, and a charging interface, which is a micro USB interface. The charging interface can be located on the bottom or side of the base.

[0016] Preferably, the diameters of the first vent and the second vent are not equal. The horizontal heights of the first and second vents may also differ.

[0017] As an alternative, the diameter of the first pore is equal to that of the second pore, and they are located on the same horizontal line.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1) Air enters from the bottom of the heating chamber, the air flow path is short, and the air supply is sufficient; 2) An air buffer chamber is provided to effectively buffer the air in the heating chamber and the air in the external environment, ensuring sufficient air storage and preventing smoke leakage; 3) An air gap is left between the heating component and the shell, which allows airflow to pass through and uses air for heat insulation, reducing the contact area of ​​solid heat transfer, effectively blocking the heat of the heating element, reducing the external temperature of the device, and preventing the user from feeling too hot to the touch, thus improving the user experience; 4) A hollow layer is set between the heating chamber and the power supply device to reduce the heat transfer from the heating chamber to the power supply device, preventing the power supply device from overheating and malfunctioning; 5) An expansion chamber is set to expand the smoke mixing space, so that the smoke has enough space to fully diffuse and mix, effectively storing the amount of smoke, and ensuring the stability of the taste when continuously smoking smoke. Attached Figure Description

[0019] Figure 1 is a structural cross-sectional view of Embodiment 1.

[0020] Figure 2 is an exploded view of the structure of the present invention.

[0021] Figure 3 is a cross-sectional view of the insulation structure.

[0022] Figure 4 is a schematic diagram of the shell structure.

[0023] Figure 5 is a structural cross-sectional view of Embodiment 2.

[0024] The components include: 1. mouthpiece; 2. heating chamber; 3. base; 4. cigarette; 5. housing; 6. heating assembly; 7. air passage; 8. air gap; 9. hollow layer; 61. heating element; 62. heating base; 63. heat insulation element; 71. first air hole; 72. second air hole; 73. air buffer chamber; 631. third air hole; and 632. expansion chamber. Detailed Implementation

[0025] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0026] Example 1

[0027] As shown in Figures 1-2, this embodiment provides a cigarette heating device, including a cigarette holder 1, a heating chamber 2, and a base 3 connected in sequence. The top of the heating chamber 2 is connected to the cigarette holder 1, and a power supply device is connected to the heating chamber 2. The power supply device is located on the base 3. Specifically, the power supply device includes a rechargeable battery, a power adapter, and a charging interface connected in series. The charging interface is a micro USB interface and can be located on the bottom surface of the base 3.

[0028] The heating chamber 2 includes a housing 5 and a heating component 6 for heating and baking the cigarette 4. The heating component 6 is electrically connected to a power supply device.

[0029] Specifically, as shown in Figure 4, the housing 5 is a hollow structure, which surrounds the outer side of the heating component 6, leaving a 1mm air gap 8 between it and the heating component 6. The two ends of the housing 5 are connected to the mouthpiece 1 and the base 3, respectively. At the same time, the bottom of the housing 5 is provided with several air channels 7. In this embodiment, the air channels 7 are divided into a first air hole 71 and a second air hole 72. Furthermore, the diameter of the first air hole 71 is equal to the diameter of the second air hole 72 and is located on the same horizontal line. Moreover, an air buffer cavity 73 for buffering air storage is provided between the first air hole 71 and the second air hole 72.

[0030] In addition, the heating assembly 6 includes a heating element 61, a heating base 62, and a heat insulation element 63. The heating element 61 is located on the top surface of the heating base 62 and is used to insert the cigarette 4 into the heating assembly for heating. The heat insulation element 63 is located around the heating element 61 and can accommodate the cigarette 4. The heat insulation element 63 is detachably connected to the heating base 62 and is also threadedly connected to the housing 5. Specifically, as shown in Figure 3, the heat insulation element 63 is also provided with several third air holes 631, which are evenly distributed around the heat insulation element 63 and connect the air gap 8 to the inner wall of the heat insulation element 63. Air enters through the first air hole 71, passes through the air buffer chamber 73, then enters the air gap 8 through the second air hole 72, and finally enters the heat insulation element 63 through the third air hole 631 to supply heat for the cigarette 4.

[0031] Furthermore, the heat insulation body 63 is also provided with an expansion cavity 632 for temporarily storing the baking smoke. The expansion cavity 632 is annular and is arranged around the outer wall of the cigarette 4. The cigarette 4 generates smoke through heating and baking. The expansion cavity 632 expands the smoke mixing space, allowing the smoke to have sufficient space to diffuse and mix fully, while effectively storing the amount of smoke, thus ensuring the stability of the taste when continuously smoking the smoke.

[0032] Furthermore, the base 3 is provided with a perforated layer 9 for heat insulation. The perforated layer 9 is located between the heating chamber 2 and the power supply device. In this embodiment, the height of the perforated layer 9 is 2mm. Specifically, the perforated layer 9 is provided with connecting brackets around its perimeter, hollowed out in the center to utilize air for heat insulation, and has pipes for connecting the heating component 6 to the power supply device wiring. The perforated layer 9 is located between the heating chamber 2 and the power supply device, mainly to reduce heat transfer from the heating chamber 2 to the power supply device, preventing the power supply device from overheating and malfunctioning.

[0033] The specific implementation method of this embodiment is as follows: In use, the cigarette 4 extends from the top of the mouthpiece 1 into the heat insulation body 63 of the heating chamber 2, abutting against the top surface of the heating base 62, and the heating body 61 is inserted into the inside of the cigarette 4. The cigarette electric heating device is activated, and air enters from the first air hole 71 at the bottom of the housing 5, passes through the air buffer chamber 73, then enters the air gap 8 inside the heating chamber 2 through the second air hole 72, and finally enters the heat insulation body 63 through the third air hole 631 on the side wall of the heat insulation body 63, supplying heat to the cigarette 4. After being heated, the cigarette 4 produces smoke, some of which is stored in the expansion chamber 632. The smoke has sufficient space to diffuse and mix fully, ensuring the stability of the taste even with continuous smoking. The air buffer chamber 73 buffers the air inside the heating chamber 2 and the air in the external environment, ensuring sufficient air storage and strengthening the airflow vortex, effectively preventing backflow and leakage of smoke. In addition, the air gap 8 and the hollow layer 9 enhance heat insulation, so the user will not feel that it is too hot to touch. At the same time, it reduces the heat transfer from the heating chamber 2 to the power supply device, preventing the power supply device from overheating and malfunctioning.

[0034] Example 2

[0035] As shown in Figure 5, this embodiment also provides a cigarette heating device. The structure and principle are similar to those of Embodiment 1. The difference is that in this embodiment, the bottom of the housing 5 of the heating chamber 2 is provided with several air passages 7. The air passages 7 are directly connected to the air gap 8 inside the heating chamber 2 and the external environment, so as to allow air to enter and exit the heating chamber 2.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cigarette heating device, comprising a mouthpiece (1), a heating chamber (2), and a base (3) connected in sequence, wherein the top end of the heating chamber (2) is connected to the mouthpiece (1), and a power supply device is connected to the heating chamber (2), the power supply device being disposed on the base (3), characterized in that: The heating chamber (2) includes a housing (5) and a heating assembly (6) for heating and baking the cigarette (4). The heating assembly (6) is electrically connected to a power supply device. The housing (5) surrounds the outside of the heating assembly (6), and its two ends are connected to the mouthpiece (1) and the base (3) respectively. The bottom end of the housing (5) is provided with an air passage (7), which connects the heating chamber (2) with the external environment and is used for air to enter and exit the heating chamber (2).

2. The cigarette heating device according to claim 1, characterized in that: An air gap (8) is provided between the heating component (6) and the housing (5), and the width of the air gap (8) is in the range of 0.5-1.5mm.

3. The cigarette heating device according to claim 2, characterized in that: The heating assembly (6) includes a heating element (61), a heating base (62), and a heat insulation element (63). The heating element (61) is located on the top surface of the heating base (62) and is used to insert into the cigarette (4) for heating. The heat insulation element (63) is located around the heating element (61) and can accommodate the cigarette (4). The heat insulation element (63) is detachably connected to the heating base (62).

4. The cigarette heating device according to claim 3, characterized in that: The shell (5) is a hollow structure, and the shell (5) is detachably connected to the heat insulation body (63).

5. A cigarette heating device according to claim 4, characterized in that: The air passage (7) includes a first air hole (71) and a second air hole (72), and an air buffer cavity (73) for buffering air storage is provided between the first air hole (71) and the second air hole (72).

6. A cigarette heating device according to claim 5, characterized in that: The heat insulation body (63) is provided with a number of third air holes (631), which are evenly distributed around the perimeter and simultaneously connect the air gap (8) with the inner wall of the heat insulation body (63).

7. A cigarette heating device according to claim 3, characterized in that: The heat insulation body (63) is also provided with an expansion cavity (632) for temporarily storing baking flue gas. The expansion cavity (632) is annular and is arranged around the outer wall of the cigarette stick (4).

8. [Amended according to Rule 26, 23.09.2019] A cigarette heating device according to claim 1, characterized in that: The base (3) is provided with a perforated layer (9) for heat insulation. The perforated layer (9) is located between the heating chamber (2) and the power supply device. The height of the perforated layer (9) ranges from 1.5 to 3 mm.

9. A cigarette heating device according to claim 5, characterized in that: The diameter of the first pore (71) is not equal to the diameter of the second pore (72).

10. A cigarette heating device according to claim 5, characterized in that: The diameter of the first pore (71) is equal to that of the second pore (72), and they are located on the same horizontal line.