A heating element assembly and its aerosol forming apparatus

Abstract

This invention discloses a heating element assembly and its aerosol forming apparatus. The heating element assembly is disposed on the mounting tray of the aerosol product of the aerosol forming apparatus. The heating element assembly includes a resistance heating tube and a fixing base. The resistance heating tube is a tubular structure with a first end sealed axially and a second end open. The mounting tray has a first cavity for inserting the aerosol product. The fixing base is fixedly disposed on the mounting tray and has an air passage. The second end of the resistance heating tube is fixedly inserted into the air passage, and the first end of the resistance heating tube extends into the first cavity. This invention avoids the situation where the main unit temperature is high due to heating at the fixed position of the bottom of the resistance heating tube, by opening a first air passage hole in the resistance heating tube to connect the air passage hole with the interior of the first cavity; and / or by opening a second air passage hole in the fixing base to connect the air passage hole with the interior of the first cavity. After the cold air passes through the resistance heating tube, it can better dissipate heat.

Description

Technical Field

[0001] This invention relates to the field of aerosol generation equipment technology, and in particular to a heating element assembly and its aerosol forming apparatus. Background Technology

[0002] "Heated-non-combustible" aerosol forming devices are atomization devices that atomize aerosol-generating substrate (such as treated plant leaf products) by heating it without causing the substrate to burn. These devices heat the substrate to a temperature sufficient to produce aerosols but not hot enough to burn, thus generating the desired aerosol for the user.

[0003] The heating element components of existing "heat-not-combustible" aerosol forming devices that use resistance heating tubes generally include a resistance heating tube and a mounting base. The mounting base is fixedly installed on the mounting bracket of the aerosol forming device. However, the current resistance heating tubes and / or mounting bases do not have corresponding cooling vents, which makes the heating temperature at the bottom fixed position of the resistance heating tube too high, resulting in poor heat dissipation of the main unit. Summary of the Invention

[0004] The purpose of this invention is to provide a heating element assembly and its aerosol forming device, which aims to solve the technical problem of poor heat dissipation of the host due to excessively high heating temperature at the bottom fixed position of the existing resistive heating tube.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a heating element assembly mounted on a mounting tray of an aerosol product in an aerosol forming apparatus. The heating element assembly includes a resistance heating tube and a fixing seat. The resistance heating tube is a tubular structure with a first axial end sealed and a second end open. The mounting tray has a first cavity for inserting the aerosol product. The fixing seat is fixedly mounted on the mounting tray and has an air passage. The second end of the resistance heating tube is fixedly inserted into the air passage, and the first end of the resistance heating tube extends into the first cavity. The resistance heating tube has a first air passage hole that allows the air passage to communicate with the interior of the first cavity; and / or, the fixing seat has a second air passage hole that allows the air passage to communicate with the interior of the first cavity.

[0006] In some embodiments, the first vent is located near the mounting base.

[0007] In some implementations, the first end of the resistance heating element has a tapered structure.

[0008] In some embodiments, the heating element assembly further includes a temperature sensing element that extends into the interior of the resistance heating tube through an opening at the second end of the resistance heating tube.

[0009] In some embodiments, the temperature sensing element is positioned in the radial direction of the resistance heating tube opposite to the first or second vent hole.

[0010] In some implementations, the second vent extends in the radial direction of the resistance heating tube.

[0011] In some embodiments, when the side wall of the resistance heating tube is provided with a first vent hole and the mounting base is provided with a second vent hole, the first vent hole is located inside the mounting base, and the venting channel is connected to the interior of the first cavity in sequence through the first vent hole and the second vent hole.

[0012] According to another aspect of this application, embodiments of the present invention also provide an aerosol forming apparatus, the aerosol forming apparatus including a housing, a mounting bracket and a heating element assembly as described above, the mounting bracket being disposed at one end of the housing.

[0013] In some embodiments, when the heating element assembly includes a temperature sensing element, the housing contains a battery cell and a control board, with the control board connected to the battery cell, the resistance heating tube, and the temperature sensing element, respectively.

[0014] In some embodiments, an air inlet is provided at the end of the housing away from the mounting bracket, and the air inlet is connected to the air passage.

[0015] Compared with the prior art, the heating element assembly of the present invention has at least the following beneficial effects:

[0016] This invention discloses a heating element assembly, which is disposed on the mounting tray of an aerosol product in an aerosol forming device. The heating element assembly includes a resistance heating tube and a fixing base. The resistance heating tube is a tubular structure with a first axial end sealed and a second end open. The mounting tray has a first cavity for inserting the aerosol product. In use, the aerosol product is inserted into the first cavity, and the resistance heating tube heats the aerosol product to generate aerosol for the user to inhale. The fixing base is fixedly disposed on the mounting tray. The fixing base has an air passage, and the second end of the resistance heating tube is fixedly inserted into the air passage. The fixing base fixes the resistance heating tube, and the air passage of the fixing base is connected to the opening of the second end of the resistance heating tube. The first end of the resistance heating tube extends into the first cavity, allowing the resistance heating tube to be inserted into the aerosol when the aerosol product is inserted into the first cavity. This invention provides better heating of aerosol products within the rubber product. It features a first air passage in the resistance heating tube, allowing external cold air to be introduced into the first cavity via the air passage. Alternatively, a second air passage in the mounting base, also allowing external cold air to be introduced into the cavity via the air passage, further facilitates this process. Since the second end of the resistance heating tube is fixed, the airflow from either of these methods, or a combination thereof, can rapidly guide the high temperature of the second end of the resistance heating tube to the first cavity via cold air, thus heating the aerosol product. This avoids the problem of high main unit temperature caused by heating the fixed position at the bottom of the resistance heating tube. Furthermore, the cold airflow dissipates heat more effectively after passing through the resistance heating tube.

[0017] On the other hand, the aerosol forming apparatus provided by the present invention is designed based on the above-mentioned heating element assembly, and its beneficial effects are the same as those of the above-mentioned heating element assembly, which will not be repeated here.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the assembly structure of the heating element assembly provided in the embodiment of the present invention when the resistive heating tube is provided with a first vent hole;

[0021] Figure 2 An exploded view of the heating element assembly provided in the embodiment of the present invention, wherein the resistive heating tube of the heating element assembly is provided with a first vent hole;

[0022] Figure 3 A cross-sectional view of the heating element assembly provided in the embodiment of the present invention when the resistive heating tube is provided with a first vent hole;

[0023] Figure 4 A schematic diagram of the assembly structure of the heating element assembly provided in the embodiment of the present invention when the fixing seat of the heating element assembly is provided with a second air vent.

[0024] Figure 5 A schematic diagram showing the disassembled structure of the heating element assembly provided in the embodiment of the present invention when the fixing seat of the heating element assembly is provided with a second vent hole;

[0025] Figure 6 A cross-sectional view of the heating element assembly provided in the embodiment of the present invention when the mounting base of the heating element assembly is provided with a second vent hole.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Resistance heating element; 11. First vent hole; 12. First terminal; 13. Second terminal; 2. Mounting base; 21. Vent passage; 22. Second vent hole; 3. Temperature sensing element; 31. Third terminal; 32. Fourth terminal. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0029] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Example 1

[0032] like Figure 1-6 As shown, this embodiment of the invention provides a heating element assembly, which is mounted on a mounting tray of an aerosol product in an aerosol forming device. The heating element assembly includes a resistance heating tube 1 and a fixing base 2. The resistance heating tube 1 is a tubular structure with a first end sealed axially and an open second end. The mounting tray has a first cavity for inserting the aerosol product. The fixing base 2 is fixedly mounted on the mounting tray and has an air passage 21. The second end of the resistance heating tube 1 is fixedly inserted into the air passage 21, and the first end of the resistance heating tube 1 extends into the first cavity. The resistance heating tube 1 has a first air passage 11 that allows the air passage 21 to communicate with the interior of the first cavity; and / or, the fixing base 2 has a second air passage 22 that allows the air passage 21 to communicate with the interior of the first cavity.

[0033] In this embodiment, the heating element assembly is applied to a "heat-not-burning" aerosol forming device. Specifically, the heating element assembly is mounted on the aerosol product holder of the aerosol forming device. The heating element assembly includes a resistance heating tube 1 and a fixing base 2. The fixing base 2 is made of high-temperature resistant insulating material. The resistance heating tube 1 is a tubular structure with a first axial end sealed and a second end open. The mounting base has a first cavity for inserting the aerosol product. During use, the aerosol product is inserted into the first cavity, and the resistance heating tube 1 heats the aerosol product to generate aerosol for the user to inhale. The fixing base 2 is fixedly mounted on the mounting base. The fixing base 2 has an air passage 21. The second end of the resistance heating tube 1 is fixedly inserted into the air passage 21. The fixing base 2 fixes the resistance heating tube 1, and the air passage 21 of the fixing base 2 is connected to the opening of the second end of the resistance heating tube 1. The first end of the resistance heating tube 1 extends into the first cavity, and can be inserted into the aerosol product. When the aerosol product is inserted into the cavity, the resistance heating tube 1 is inserted to better heat the aerosol product. The present invention provides a first air passage 11 in the resistance heating tube 1, which connects the air passage 21 with the interior of the first cavity. Cold air from the outside can be introduced into the interior of the first cavity through the air passage 21 via the first air passage 11. And / or, a second air passage 22 is provided in the fixing base 2, which connects the air passage 21 with the interior of the first cavity. Cold air from the outside can be introduced into the interior of the cavity through the air passage 21 via the second air passage 22. Since the second end of the resistance heating tube 1 is a fixed end, the high temperature of the second end of the resistance heating tube 1 can be quickly guided to the first cavity by the cold air during the airflow process of the above two methods or combinations, so as to heat the aerosol product. Therefore, it can avoid the situation where the main unit temperature is high due to the fixed position of the bottom of the resistance heating tube 1 being heated. The cold airflow can dissipate heat better after passing through the resistance heating tube 1.

[0034] In some embodiments, the first vent 11 is located near the fixed base 2.

[0035] In this embodiment, by opening the first vent 11 near the fixed base 2, the airflow path can be close to the fixed base 2. The airflow carries away the heat from the second end of the resistive heating tube 1, which can prevent the fixed position at the bottom of the resistive heating tube 1 from heating up and causing the host to have a high temperature. The cold airflow can dissipate heat better after passing through the resistive heating tube 1.

[0036] The number of first air vents 11 and second air vents 22 can be multiple, forming multiple cooling airflow channels to further improve the heat dissipation effect.

[0037] In some embodiments, the first end of the resistance heating tube 1 has a tapered structure.

[0038] In this embodiment, the first end of the resistance heating tube 1 is designed with a tapered structure to facilitate the insertion of the aerosol product.

[0039] In some embodiments, the heating element assembly further includes a temperature sensing element 3, which extends into the interior of the resistance heating tube 1 through an opening at the second end of the resistance heating tube 1.

[0040] In this embodiment, by setting a temperature sensing element 3 inside the resistance heating tube 1, the temperature sensing element 3 is integrated into the interior of the resistance heating tube 1, making the temperature measurement more accurate and facilitating data judgment.

[0041] In some embodiments, the temperature sensing element 3 is positioned in the radial direction of the resistance heating tube 1 opposite to the first vent 11 or the second vent 22.

[0042] In this embodiment, the temperature sensing element 3 can be set in the radial direction of the resistance heating tube 1 at a position opposite to the first air passage 11 or the second air passage 22, which can detect the temperature of the airflow, making the temperature measurement more accurate and facilitating data judgment.

[0043] In some embodiments, the second vent 22 extends in the radial direction of the resistance heating tube 1.

[0044] In this embodiment, by setting the second vent 22 as a channel extending in the radial direction of the resistance heating tube 1, it is possible to prevent the matrix residue of the aerosol product from falling into the second vent 22 and blocking it.

[0045] In some embodiments, when the side wall of the resistance heating tube 1 is provided with a first vent hole 11 and the fixing base 2 is provided with a second vent hole 22, the first vent hole 11 is located inside the fixing base 2, and the venting channel 21 is connected to the interior of the first cavity through the first vent hole 11 and the second vent hole 22 in sequence.

[0046] In this embodiment, when the side wall of the resistance heating tube 1 is provided with a first vent hole 11 and the fixing seat 2 is provided with a second vent hole 22, the first vent hole 11 can be fixed to the outside of the fixing seat 2 or the inside of the fixing seat 2. When the first vent hole 11 can be fixed to the inside of the fixing seat 2, in order to form an airflow path, the first vent hole 11 and the second vent hole 22 can be connected. At this time, the air passage 21 can be connected to the inside of the first cavity in sequence through the first vent hole 11 and the second vent hole 22 to form a complete cooling airflow passage.

[0047] Example 2

[0048] This invention also provides an aerosol forming apparatus, which includes a housing, a mounting bracket, and the heating element assembly of Embodiment 1, with the mounting bracket disposed at one end of the housing.

[0049] Specifically, the aerosol forming apparatus of the present invention can be a "heated non-combustible" type aerosol forming apparatus. The aerosol forming apparatus includes a shell, a mounting bracket, and the heating element assembly of Example 1. The mounting bracket is disposed at one end of the shell, and an opening is provided on the end of the mounting bracket away from the shell. The aerosol product is inserted into the mounting bracket through the opening.

[0050] In some embodiments, when the heating element assembly includes a temperature sensing element 3, the housing contains a battery cell and a control board. The control board is connected to the battery cell, the resistance heating tube 1, and the temperature sensing element 3, respectively. The battery cell supplies power to the resistance heating tube 1, and the control board obtains information from the temperature sensing element 3 and controls the working state of the resistance heating tube 1.

[0051] The resistance heating element 1 may have at least a first terminal 12 and a second terminal 13, and the resistance heating element 1 is connected to the control board through the first terminal 12, the second terminal 13 and the wire; the temperature measuring element 3 may have at least a third terminal 31 and a fourth terminal 32, and the temperature measuring element 3 is connected to the control board through the third terminal 31, the fourth terminal 32 and the wire.

[0052] In some embodiments, an air inlet is provided at the end of the housing away from the mounting bracket. The air inlet is connected to the air passage, and cold air can flow into the housing from the air inlet and then into the air passage.

[0053] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A heating element assembly configured to be mounted on a mounting tray of an aerosol article of an aerosol forming device, characterized in that: The heating element assembly comprises a resistance heating tube (1) and a fixing base (2), the resistance heating tube (1) is a tubular structure with a first end blocked and a second end with an opening, the installation holder has a first cavity for inserting the aerosol product, the fixing base (2) is fixedly arranged on the installation holder, the fixing base (2) has a gas passing channel (21), the second end of the resistance heating tube (1) is fixedly inserted into the gas passing channel (21), the first end of the resistance heating tube (1) extends into the first cavity, the resistance heating tube (1) is provided with a first gas passing hole (11) for connecting the gas passing channel (21) and the inside of the first cavity; and / or, the fixing base (2) is provided with a second gas passing hole (22) for connecting the gas passing channel (21) and the inside of the first cavity; When the side wall of the resistance heating tube (1) is provided with the first gas passing hole (11) and the fixing base (2) is provided with the second gas passing hole (22), the first gas passing hole (11) is located inside the fixing base (2), and the gas passing channel (21) is connected to the inside of the first cavity through the first gas passing hole (11) and the second gas passing hole (22) in sequence.

2. The heat generating body assembly according to claim 1, characterized by: The first gas passing hole (11) is arranged near the fixing base (2).

3. The heat generating body assembly according to claim 1, characterized by: The end of the first end of the resistance heating tube (1) is a tapered structure.

4. The heat generating body assembly according to claim 1, characterized by: The heating element assembly further comprises a temperature measuring element (3), which extends into the inside of the resistance heating tube (1) through the opening of the second end of the resistance heating tube (1).

5. The heat generating body assembly according to claim 4, characterized by: The temperature measuring element (3) is arranged at a position opposite to the first gas passing hole (11) or the second gas passing hole (22) in the radial direction of the resistance heating tube (1).

6. The heat generating body assembly according to claim 1, characterized by: The second gas passing hole (22) extends in the radial direction of the resistance heating tube (1).

7. An aerosol forming device, characterised in that: The aerosol forming device comprises a shell, an installation holder and the heating element assembly according to any one of claims 1-6, and the installation holder is arranged at one end of the shell.

8. An aerosol-forming device according to claim 7, characterised in that: When the heating element assembly comprises a temperature measuring element (3), the inside of the shell is provided with a battery and a control board, and the control board is connected to the battery, the resistance heating tube (1) and the temperature measuring element (3) respectively.

9. An aerosol-forming device according to claim 7, characterised in that: The end of the shell away from the installation holder is provided with an air inlet hole, and the air inlet hole is connected to the gas passing channel (21).

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