Heating assembly and aerosol generating device

Abstract

The utility model discloses a heating assembly and an aerosol generating device, and the heating assembly comprises a housing which is internally provided with a first chamber extending longitudinally; the tubular body longitudinally extends in the first cavity, and the tubular body is arranged in a hollow mode to form a second cavity; the heating element is constructed to be in a double helix shape and surrounds the tubular body, and the heating element is used for generating heat and transmitting the heat to the aerosol generating product; and the temperature measuring element is arranged in the second cavity. In this way, the timeliness of temperature feedback of the temperature measuring element and the consistency of temperature measurement can be improved.

Description

Technical field

[0001] The present application relates to the field of aerosol technology, and in particular to a heating component and an aerosol generating device. [Background Technology]

[0002] Tobacco products (e.g., cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke during use. Existing technologies have been developed to replace these tobacco-burning products by creating products that release compounds without combustion. An example of such a product is an aerosol-generating device, which typically includes a heating element and a receiving chamber. The receiving chamber is used to hold the aerosol-generating product used with the aerosol-generating device, and the heating element is inserted into the aerosol-generating product to heat it, thereby volatilizing at least a portion of the active substance in the aerosol-generating product to produce an aerosol.

[0003] A temperature measuring element is usually provided in the heating component, which is used to measure the temperature of the heating component. Existing temperature measuring elements are usually set on the outer surface of the heating component or at the bottom of the heating component. If the temperature measuring element is set on the outer surface of the heating component, it is easy for the temperature measuring element to fall off; if it is set at the bottom of the heating component, it is easy for the temperature measuring element to feedback the temperature in a timely manner, thereby affecting temperature control. [Utility Model Content]

[0004] The present application provides a heating assembly to solve the technical problems in existing heating assemblies in which temperature measuring elements are easily detached and temperature feedback is not timely.

[0005] At least one embodiment of the present application provides a heating assembly for inserting into an aerosol-generating article to heat and generate an aerosol, comprising:

[0006] a housing, wherein a longitudinally extending first chamber is provided in the housing;

[0007] a tubular body extending longitudinally in the first chamber, wherein the tubular body is hollow to form a second chamber;

[0008] a heating element configured in a double helix shape and surrounding the tubular body, the heating element being configured to generate heat and transfer heat to the aerosol-generating article;

[0009] The temperature measuring element is arranged in the second chamber.

[0010] In one embodiment, the temperature measuring element is arranged on the longitudinal axis of the tubular body.

[0011] In one embodiment, the shell has a first end and a second end arranged opposite to each other in the longitudinal direction, the first end is used to be inserted into the aerosol-generating article, and the second end is open, and the tubular body is assembled into the first chamber through the opening of the second end.

[0012] In one of the embodiments, the tubular body comprises a first portion and a second portion distributed along the longitudinal direction, the first portion has a smaller diameter than the second portion, the temperature measuring element is arranged in the first portion, the heating element is arranged around the outer periphery of the first portion, and the second portion is connected to the shell and seals the opening of the second end when connected.

[0013] In one of the embodiments, the second portion is provided with a first through hole and a second through hole, the first through hole is connected to the first chamber and the outside, the second through hole is connected to the second chamber and the outside, the first through hole is used for the electric connection end of the heating element to pass through, and the second through hole is used for the electric connection end of the temperature measuring element to pass through.

[0014] In one of the embodiments, the tubular body has a first end portion and a second end portion arranged oppositely along the longitudinal direction, and the second chamber extends from the first end portion to the second end portion.

[0015] In one of the embodiments, the tubular body has a gap with the inner wall of the shell, the gap is a vacuum, or the gap is filled with inert gas, and the shell is made of light-transmitting material.

[0016] In one of the embodiments, the tubular body has a gap with the inner wall of the shell, the gap is filled with heat-conducting material, and the shell is made of light-blocking material.

[0017] In one of the embodiments, the tubular body is made of insulating material, and the heating element is wound on the outer wall of the tubular body.

[0018] In one of the embodiments, the tubular body is made of conductive material, and the heating element has a gap with the tubular body.

[0019] At least one of the embodiments of the present application further provides an aerosol generating device, comprising:

[0020] A receiving chamber for receiving the aerosol generating article;

[0021] The heating assembly provided by the above embodiments has the following advantages. The heating element adopts a double helix structure, which can stagger the heating elements during winding and effectively avoid short circuit of the heating elements. Meanwhile, the double helix structure does not need to pass the heating element through the inside of the tubular body, and thus the temperature measuring element can be arranged in the second chamber of the tubular body, thereby avoiding contact between the aerosol generating article and the temperature measuring element during insertion of the aerosol generating article, preventing the temperature measuring element from falling off, and improving the timeliness of temperature feedback and the consistency of temperature measurement. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the present embodiments. Like numbers refer to like elements throughout the drawings, unless otherwise indicated. The figures are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the embodiments.

[0023] Figure 1 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0024] Figure 2 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application; Figure 1 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0025] Figure 3 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application; Figure 1 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0026] Figure 4 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application; Figure 3 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application;

[0027] Figure 5 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application; Figure 3 A structural schematic diagram of an aerosol generating device according to an embodiment of the present application; DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" / "connected to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "left", "right", "inner", "outer" and similar expressions used in the present specification are for the purpose of illustration only.

[0029] Unless otherwise defined, all technical and scientific terms used in the present specification are the same as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the associated listed items.

[0030] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0031] In the embodiments of the present application, the "installation" includes fixing or restricting a component or device to a specific position or place by welding, screwing, clamping, bonding, etc. The component or device can remain stationary at a specific position or place or can move within a limited range. After the component or device is fixed or restricted to a specific position or place, it may or may not be disassembled, which is not limited in the embodiments of the present application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] An embodiment of the present application provides an aerosol generating device 100, such as Figure 1 As shown, the aerosol generating device 100 may include a battery core 10 , a main board 20 and a heating assembly 30 .

[0034] Specifically, the controller of the aerosol generating device 100 is mounted on the mainboard 20. The battery cell 10 and the heating assembly 30 are electrically connected to the controller, thereby controlling the battery cell 10 to supply power to the heating assembly 30. The aerosol generating device 100 also includes a longitudinally extending receiving chamber 40 for receiving the aerosol generating product 200 used in conjunction with the aerosol generating device 100.

[0035] At least a portion of the heating assembly 30 extends into the receiving chamber 40. When the aerosol-generating article 200 is received in the receiving chamber 40, the heating assembly 30 can be inserted into the aerosol-generating article 200. The heating assembly 30 can heat the aerosol-generating article 200, thereby causing a portion of the active substance filled in the aerosol-generating article 200 to volatilize due to the heat, thereby generating an aerosol.

[0036] The aerosol-generating article 200 may comprise a tobacco-containing material that releases volatile compounds from the article upon heating, or a non-tobacco material that can be heated and then suitable for electrically heated smoking. The aerosol-generating article 200 preferably comprises a solid substrate that may comprise one or more of powder, granules, shredded strips, ribbons, or flakes of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco. Alternatively, the solid substrate may contain additional tobacco or non-tobacco volatile flavor compounds that are released upon heating.

[0037] In some embodiments, as Figure 2 and Figure 3As shown, the heating assembly 30 includes a housing 31. The housing 31 has a first end 311 and a second end 312 disposed opposite each other in the longitudinal direction. The first end 311 is located in the receiving chamber 40 and is configured in a sheet or pin shape. When the aerosol-generating article 200 is received in the receiving chamber 40, the heating assembly 30 can be inserted into the aerosol-generating article 200 for heating.

[0038] The shell 31 defines a first chamber 313 extending between the first end 311 and the second end 312. The heating component 30 also includes a tubular body 32 extending longitudinally in the first chamber 313. The tubular body 32 is hollow to form a second chamber 321. The heating component 30 also includes a temperature measuring element 33 arranged in the second chamber 321. The temperature measuring element 33 can be a thermocouple or a temperature sensor that can measure temperature.

[0039] The heating assembly 30 may further include a heating element 34. The heating element 34 is used to generate heat, which is transferred to the aerosol generating article 200 to heat the aerosol generating article 200. The heating element 34 is a resistive heating wire. The heating element 34 may be configured as follows: Figure 2 or Figure 4 The double helix shape shown. Both ends of the resistance heating wire are located on the outer periphery of the tubular body 32, and the two ends of the resistance heating wire are synchronously wound from one end of the tubular body 32. The resistance heating wire is wound around the outer periphery of the tubular body 32 in a double helix shape, and the middle portion of the resistance heating wire is located on the outer periphery of the other end of the tubular body 32.

[0040] Furthermore, the heating element 34 is arranged around the tubular body 32 so that the temperature measuring element 33 in the tubular body 32 can measure the corresponding temperature. The temperature measuring element 33 then transmits the measured temperature to the controller of the aerosol generating device 100. The controller can control the temperature of the heating element 34 based on the temperature, thereby causing the heating component 30 to heat the aerosol generating article 200 according to a preset heating curve.

[0041] In some embodiments, when the tubular body 32 is made of an insulating material, the heating element 34 can be wound around the outer wall of the tubular body 32, thereby integrating the heating element 34 with the tubular body 32 and allowing the heating element 34 to be assembled together with the tubular body 32. Specifically, the heating element 34 can be formed by spirally winding a continuous wire from the first end 322 of the tubular body 32 to the second end 323, and then spirally winding from the second end 323 to the first end 322 in the opposite direction, thereby achieving the aforementioned double-helix shape. Furthermore, the first electrical connection end 341 and the second electrical connection end 342 of the heating element 34, which are used for soldering the conductive pins, are located on the same side, that is, at the first end 322.

[0042] Alternatively, in some embodiments, when the tubular body 32 is made of a conductive material, the heating element 34 can be made of a resistance heating wire with a certain rigidity. The heating element 34 is first wound into a double helix structure in the above manner, and then the heating element 34 is sleeved on the periphery of the tubular body 32, so that a certain gap is maintained between the heating element 34 and the tubular body 32 to avoid a short circuit in the heating element 34.

[0043] In this embodiment, the heating element 34 utilizes a double-helix structure. This allows the first electrical connection end 341 and the second electrical connection end 342 of the heating element 34 to be located on the same side, facilitating soldering to the conductive pins to power the heating element 34. Furthermore, the heating elements 34 can be staggered during winding, effectively preventing short circuits within the heating element 34. Furthermore, the double-helix structure eliminates the need to pass the heating element 34 through the interior of the tubular body 32. The temperature measuring element 33 can then be positioned within the tubular body 32, specifically within the second chamber 321. Positioning the temperature measuring element 33 within the tubular body 32 prevents the aerosol-generating article 200 from contacting the temperature measuring element 33, potentially causing it to fall out, when the aerosol-generating article 200 is inserted. Furthermore, it improves the timeliness of temperature feedback from the temperature measuring element 33 and the consistency of temperature measurements, facilitating temperature control of the heating assembly 30.

[0044] In some implementations, such as Figure 2 As shown, the second end 312 of the housing 31 is open, allowing the tubular body 32 to be assembled into the first chamber 313 through the opening of the second end 312. Part of the structure of the tubular body 32 can block the opening of the housing 31. When the tubular body 32 is made of an insulating material, as described in the above embodiment, the heating element 34 can be combined with the tubular body 32. In this case, the heating element 34 and the tubular body 32 can be assembled simultaneously into the first chamber 313 through the opening of the second end 312. When the tubular body 32 is made of a conductive material, the heating element 34 can first be wound into a double helix structure and assembled into the first chamber 313 through the opening of the second end 312. The tubular body 32 can then be assembled into the first chamber 313 through the opening of the second end 312. This allows the heating element 34 to be sheathed around the tubular body 32, thereby surrounding the tubular body 32.

[0045] In some implementations, such as Figure 3 and Figure 5As shown, the tubular body 32 also includes a first portion 324 and a second portion 325 distributed longitudinally. The diameter of the first portion 324 is smaller than the diameter of the second portion 325. The heating element 34 surrounds the outer circumference of the first portion 324, and the temperature measuring element 33 is arranged in the first portion 324. The second portion 325 is used to be sealed and connected to the shell 31. That is, when the tubular body 32 is assembled in the first chamber 313, the second portion 325 is connected to the shell 31 on the one hand, and on the other hand, it is connected to seal the opening of the second end 312 to prevent external cold air from entering the first chamber 313 through the opening, thereby reducing the heating efficiency of the heating element 34.

[0046] For example, a sealant can be provided between the second portion 325 and the end wall of the second end 312. The sealant can be made of any flexible material, such as silicone, rubber, or latex, so that the sealant elastically abuts between the second portion 325 and the end wall of the second end 312, and the second portion 325 and the housing 31 can be connected through an interference fit with the sealant. Alternatively, a sealant can be filled between the second portion 325 and the end wall of the second end 312, thereby connecting the second portion 325 and the housing 31 via the sealant. Alternatively, the second portion 325 and the housing 31 can be connected by a fusion seal, thereby sealing the opening of the second end 312.

[0047] And, in some embodiments, as Figure 3 and Figure 5 As shown, the second part 325 is provided with two first through holes 3251 connecting the first chamber 313 and the outside, and two second through holes 3252 connecting the second chamber 321 and the outside. The first electrical connection end 341 and the second electrical connection end 342 of the heating element 34 are respectively exposed to the shell 31 through the first through holes 3251 so as to be electrically connected to the power supply component of the aerosol generating device 100, and the first electrical connection end 331 and the second electrical connection end 332 of the temperature measuring element 33 are respectively exposed to the shell 31 through the second through holes 3252 so as to be electrically connected to the power supply component of the aerosol generating device 100.

[0048] In some embodiments, as Figure 3 As shown, the tubular body 32 includes a first end 322 and a second end 323 arranged opposite to each other in the longitudinal direction, and the second chamber 321 extends from the first end 322 to the second end 323, thereby providing sufficient arrangement space for the temperature measuring element 33, so that the position of the temperature measuring element 33 in the second chamber 321 can be adjusted so that the temperature measuring element 33 is arranged at the position with the highest temperature.

[0049] In some embodiments, as Figure 4As shown, a gap 314 is maintained between the inner wall of the housing 31 and the tubular body 32. The gap 314 is a vacuum or filled with an inert gas. The housing 31 is made of a light-transmitting material, such as glass or light-transmitting ceramic, so that the heating element 34 can transfer heat to the aerosol-generating article 200 by thermal radiation. Alternatively, in some embodiments, the housing 31 is made of a light-insulating material, such as zirconium oxide, aluminum oxide, or metal. In this case, the gap 314 is filled with a thermally conductive material. The heat generated by the heating element 34 is transferred to the housing 31 through the thermally conductive material. When the housing 31 is inserted into the aerosol-generating article 200, the aerosol-generating article 200 can be heated.

[0050] And, in some embodiments, as Figure 3 As shown, to avoid uneven heating of the heating assembly 30 due to the placement of the temperature measuring element 33 in the second chamber 321, the temperature measuring element 33 is disposed on the longitudinal axis L of the tubular body 32. Furthermore, the housing 31 and the tubular body 32 in the above embodiment can be made of ceramic, glass, or stainless steel, so that the housing 31 and the tubular body 32 have a certain degree of rigidity.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heating assembly for inserting into an aerosol-generating article to heat and generate an aerosol, characterized in that: include: a housing, wherein a longitudinally extending first chamber is provided in the housing; a tubular body extending longitudinally in the first chamber, wherein the tubular body is hollow to form a second chamber; a heating element configured in a double helix shape and surrounding the tubular body, the heating element being configured to generate heat and transfer heat to the aerosol-generating article; The temperature measuring element is arranged in the second chamber.

2. The heating assembly according to claim 1, wherein The temperature measuring element is arranged on the longitudinal axis of the tubular body.

3. The heating assembly according to claim 1, wherein The shell has a first end and a second end oppositely arranged in the longitudinal direction, the first end is used to be inserted into the aerosol generating article, the second end is open, and the tubular body is assembled into the first chamber through the opening of the second end.

4. The heating assembly according to claim 3, characterized in that The tubular body includes a first part and a second part distributed along the longitudinal direction, the diameter of the first part is smaller than the diameter of the second part, the temperature measuring element is arranged in the first part, the heating element surrounds the outer circumference of the first part, and the second part is connected to the shell and seals the opening of the second end when connected.

5. The heating assembly according to claim 4, characterized in that The second part is provided with a first through hole and a second through hole, the first through hole connects the first chamber and the outside world, the second through hole connects the second chamber and the outside world, the first through hole is for the electrical connection end of the heating element to pass through, and the second through hole is for the electrical connection end of the temperature measuring element to pass through.

6. The heating assembly according to claim 1, wherein The tubular body has a first end and a second end opposite to each other in a longitudinal direction, and the second chamber extends from the first end to the second end.

7. The heating assembly according to claim 1, wherein A gap is maintained between the tubular body and the inner wall of the shell, the gap is vacuum, or the gap is filled with inert gas, and the shell is made of light-transmitting material.

8. The heating assembly according to claim 1, wherein: A gap is maintained between the tubular body and the inner wall of the shell, the gap is filled with heat-conducting material, and the shell is made of light-isolating material.

9. The heating assembly according to claim 1, wherein: The tubular body is made of insulating material, and the heating element is wound around the outer wall of the tubular body.

10. The heating assembly according to claim 1, wherein The tubular body is made of conductive material, and a gap is maintained between the heating element and the tubular body.

11. An aerosol generating device, characterized in that: include: a receiving chamber for receiving the aerosol generating product; The heating component according to any one of claims 1 to 10, wherein at least a portion of the heating component extends into the receiving chamber.

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