Aerosol generator and its heating assembly

Abstract

An aerosol generator (1) and its heating assembly (11) are provided. The heating assembly (11) includes an infrared light-transmitting tube (112) and a heating member (111) for generating infrared light, the tube (112) including an opening into which the heating member (111) is inserted, the heating member (111) being provided inside the tube (112) and at least partially spaced from the tube wall of the tube (112), the heating assembly (11) further includes a temperature measuring member (113), the temperature measuring member (113) including a temperature measuring probe (1131), the temperature measuring probe (1131) being provided between the heating member (111) and the opening (1120). The temperature measuring probe (1131) is positioned between the heating substrate (1111) and the opening (1120), and the temperature measuring probe (1131) can accurately and stably obtain the heating temperature of the aerosol-forming substrate (100), thereby improving the atomization effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heat non-combustion atomization, and more specifically, to an aerosol generating device and its heating assembly.

Background Art

[0002] In the technical field of HNB (heat non-combustion) atomization, usually, heating methods such as central heating element heating or outer peripheral heating element heating are used. Usually, the heating element generates heat, and then the heat is directly transmitted to a medium such as an aerosol forming substrate by heat conduction, the medium is generally atomized within 350 °C, and the maximum temperature of the heating element is generally controlled within 400 °C. However, for a heating element that uses infrared light for heating, the maximum operating temperature of the heating element can reach 500 °C or more, and even about 1000 °C. Therefore, if the temperature control is inappropriate, it is easy to cause overheating of the medium, which affects the aroma and taste. Therefore, how to accurately and reliably measure the temperature is an important prerequisite for ensuring the aroma and taste.

Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved aerosol generating device and its heating assembly for the above-mentioned defects of the prior art.

[0004] The technical means for solving the problems of the present invention are as follows. A heating assembly including a tube body that transmits infrared light and a heating member for generating infrared light, the tube body includes an opening into which the heating member is inserted, the heating member is provided in the tube body and is provided at least partially spaced from the tube wall of the tube body, the heating assembly further includes a temperature measuring member, the temperature measuring member includes a temperature measuring probe, and the temperature measuring probe is a heating assembly provided between the heating member and the opening.

[0005] In some embodiments, the heating element includes a heat-generating substrate and an infrared radiation layer, the infrared radiation layer being provided on the heat-generating substrate, and the temperature measuring probe being provided between the heat-generating substrate and the opening.

[0006] In some embodiments, the tube is used to be at least partially inserted into an aerosol-forming substrate, and the temperature measuring member is provided inside the tube.

[0007] In some embodiments, the heating assembly further includes a mounting bracket, which is provided inside the tube through the opening, and the temperature measuring member further includes a temperature measuring lead wire connected to the temperature measuring probe, the temperature measuring lead wire being fixed to the mounting bracket, and the temperature measuring probe being located at one end of the mounting bracket away from the opening and higher in the vertical direction than the end face of the end of the mounting bracket away from the opening.

[0008] In some embodiments, the heating base includes a helical segment, and the heating member further includes a pin segment connected to one end of the helical segment toward the opening, wherein the vertical projection of the temperature measuring probe on the axis of the tube and the vertical projection of the pin segment on the axis of the tube overlap at least partially.

[0009] In some embodiments, the heating substrate includes a helical segment, and the heating member further includes a conductive portion and a pin segment connected to one end of the helical segment toward the opening, a first connection portion formed between the conductive portion and the pin segment, and the temperature measuring probe provided between the first connection portion and the helical segment.

[0010] In some embodiments, the temperature measuring probe is provided in close contact with the inner wall of the tube.

[0011] In some embodiments, the temperature measuring probe is provided in close contact with the pin segment.

[0012] In some embodiments, the portion of the temperature measuring lead wire located between the temperature measuring probe and the mounting bracket includes at least one bent segment.

[0013] In some embodiments, the distance from the temperature measuring probe to the top of the heating element is 8 mm or more and 20 mm or less.

[0014] In some embodiments, the distance between the temperature measuring probe and the end of the mounting bracket away from the opening is 5 mm or less.

[0015] In some embodiments, the tube is used to be inserted at least partially into an aerosol-forming substrate, the temperature measuring member is located outside the tube, and the temperature measuring probe is in close contact with the outer wall of the tube.

[0016] In some embodiments, the tubular body includes an insertion segment and a fixed segment connected to the insertion segment, the heating assembly further includes a flange, the flange being fixed to the fixed segment and having a gap between it and the insertion segment, and the temperature measuring probe corresponding to the gap.

[0017] In some embodiments, the distance from the temperature measuring probe to the flange is 2 mm or more, and the distance to the insertion segment is 0 mm or more.

[0018] In some embodiments, the temperature measuring member includes a thermocouple or an NTC temperature measuring element.

[0019] In some embodiments, an accommodation cavity for accommodating at least a part of the aerosol-forming substrate is formed in the tube body, and the temperature measurement probe is provided at the bottom of the accommodation cavity or outside the tube body.

[0020] In some embodiments, the tube body includes a first tube body and a second tube body externally fitted outside the first tube body. The heating member is provided with a gap between the first tube body and the second tube body and is provided with a gap from the outer wall of the first tube body. The temperature measurement probe is provided on the inner wall of the second tube body.

[0021] An aerosol generating device including the heating assembly according to any one of the above is further provided.

Advantages of the Invention

[0022] The present invention has at least the following beneficial effects. The operating temperature of the heating member can reach 500 °C or higher, and further 1000 °C or higher. By installing the temperature measurement probe between the heating substrate and the opening, the temperature can be measured while avoiding the high-temperature part, so that the heating temperature of the aerosol-forming substrate can be obtained more accurately and stably, and the atomization effect is improved.

Brief Description of the Drawings

[0023] Hereinafter, the present invention will be further described with reference to the drawings and examples. [Figure 1] It is a three-dimensional structural schematic diagram of an aerosol generating device in some embodiments of the present invention with an aerosol-forming substrate attached. [Figure 2] It is a three-dimensional structural schematic diagram of the aerosol generating device and the aerosol-forming substrate shown in FIG. 1. [Figure 3] It is a three-dimensional structural schematic diagram of a heat generating assembly in which the temperature measurement member shown in FIG. 2 is located in the tube body. [Figure 4] It is a cross-sectional structural schematic diagram of the heat generating assembly shown in FIG. 3. [Figure 5]It is a schematic cross-sectional structure diagram of another state of the heat-generating assembly shown in FIG. 3, which is a preferred view. [Figure 6] It is an exploded perspective view of the heat-generating assembly shown in FIG. 3. [Figure 7] It is a schematic three-dimensional structure diagram of the heat-generating assembly in which the temperature measuring member shown in FIG. 2 is located outside the tube body. [Figure 8] It is a schematic cross-sectional structure diagram of the heat-generating assembly shown in FIG. 7. [Figure 9] It is a schematic three-dimensional exploded structure diagram of the heat-generating assembly shown in FIG. 7. [Figure 10] It is a schematic cross-sectional structure diagram of the heating member shown in FIG. 4. [Figure 11] It is a schematic three-dimensional structure diagram of the heat-generating assembly in some embodiments of the present invention. [Figure 12] It is a schematic cross-sectional structure diagram of the heat-generating assembly shown in FIG. 11. [Figure 13] It is an exploded perspective view of the heat-generating assembly shown in FIG. 11.

Embodiments for Carrying out the Invention

[0024] In order to more clearly understand the technical features, objects and effects of the present invention, specific embodiments of the present invention will be described in detail while referring to the drawings. In the following description, the orientation or positional relationship indicated by "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is configured and operated in a specific orientation, and is only for explaining the technical means, and it should not be understood as limiting the present invention because it does not indicate that the designated device or element needs to have a specific orientation.

[0025] Unless otherwise specified and limited, terms such as “attachment,” “connection,” “bonding,” “fixing,” and “installation” should be understood broadly. For example, these may be fixed connections, removable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, internal communication between two elements, or interaction relationships between two elements. When one element is referred to as “above” or “below” another element, the elements may be “directly” or “indirectly” positioned above the other element, or there may be one or more intervening elements. Terms such as “first,” “second,” “third,” etc., are for the purpose of facilitating the description of the technical means and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features limited to “first,” “second,” “third,” etc., may explicitly or implicitly include one or more such features. A person skilled in the art will be able to understand the specific meaning of the above terms in the present invention depending on the specific circumstances.

[0026] In the following description, specific details such as particular system configurations and techniques are proposed for illustrative purposes, not limitation, to fully understand embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention can be realized in other embodiments without these specific details. In other cases, detailed descriptions of known systems, apparatus, circuits, and methods are omitted so as not to interfere with the description of this application.

[0027] Figures 1 and 2 show aerosol generators 1 in several embodiments of the present invention, respectively. The aerosol generator 1 can heat the aerosol-forming substrate 100 using a non-combustion heating method, and has good atomization stability and a good atomized texture. In some embodiments, the aerosol-forming substrate 100 may be a solid material in the form of threads, sheets, or integrally molded material made from the leaves and / or stems of a plant (e.g., tobacco), and aroma components may be further added to the solid material.

[0028] As shown in Figure 2, in some embodiments, the aerosol generator 1 may include a heating body 10 for heating an aerosol-forming substrate 100 and a host 20 electrically insertable and removable from the heating body 10. The host 20 is used for the user to grasp and can supply the electrical energy necessary for heating to the heating body 10. The aerosol-forming substrate 100 is insertable and removable from the heating body 10, specifically, the heating body 10 is inserted into a medium segment of the aerosol-forming substrate 100, and the medium segment is heated by the heating body 10 to generate an aerosol. The heating body 10 has advantages such as being easy to assemble, having a simple structure, high atomization efficiency, good stability, and a long service life.

[0029] In some embodiments, the heating body 10 may include a needle-shaped heating assembly 11 and a housing 12. In some embodiments, the housing 12 may include an upper housing 121 and a lower housing 122. The upper housing 121 and the lower housing 122 together constitute a fixed structure for housing the heating assembly 11. The upper housing 121 is attached to the upper end of the lower housing 122, and the lower end of the lower housing 122 is electrically connected to the host 20 in a mechanically removable manner.

[0030] The heating assembly 11 is mounted on the lower housing 122 and electrically connected to the host 20 via the lower housing 122, thereby realizing the energized heating function of the heating assembly 11. When the aerosol-forming substrate 100 is mounted on the heating body 10, the heating assembly 11 is inserted into the medium segment of the aerosol-forming substrate 100, and by intermediate heating, it heats and atomizes the aerosol-forming substrate 100 by light wave radiation and heat transfer, thereby obtaining a more uniform atomization effect.

[0031] As shown in Figures 3 to 10, in some embodiments, the heating assembly 11 may include a heating member 111 and a tube 112 positioned to cover the heating member 111. The heating member 111 is columnar and may be wound to form a helical structure, such as a single helix, double helix, M-shaped, N-shaped, or other shape. Of course, in some other embodiments, the heating member 111 is not limited to one but may be two or more. The shape of the heating member 111 is not limited to a columnar shape, and in some embodiments, the shape of the heating member 111 may be sheet-like or cylindrical. As shown in Figure 10, the heating member 111 is mounted inside the tube 112, and the heating member 111 includes a heating base 1111, with an infrared radiation layer 1112 provided outside the heating base 1111. When the heating member 111 is electrically heated, the infrared radiation layer 1112 is used to generate infrared rays. Infrared rays penetrate the tube 112 and heat the aerosol-forming substrate 100. By providing at least a partial gap between the heating element 1111 and the inner wall of the tube 112, the heating element 1111 and the tube 112 come into contact over a large area, preventing the local temperature of the tube 112 from becoming too high and causing the aerosol-forming substrate 100 to burn.

[0032] As shown in Figures 4 to 9, the heating assembly 11 further includes, in some embodiments, a temperature measuring member 113, a mounting bracket 114, and a flange 115. The temperature measuring member 113 is mounted inside or outside the tube 112 and measures the temperature of the aerosol-forming substrate 100, thereby controlling the temperature at which the aerosol-forming substrate 100 is heated so that it is always at the most ideal temperature. The mounting bracket 114 is columnar and made of a heat-resistant insulating hard material, such as alumina, cordierite, or zirconia. The mounting bracket 114 may be mounted inside the tube 112 and positioned below the heating base 1111. The outer diameter of the mounting bracket 114 is matched to the inner diameter of the tube 112 so that it is easily mounted inside the tube 112, preferably by a tight fit. The mounting bracket 114 is used to secure the heating member 111 and / or the temperature measuring member 113.

[0033] As shown in Figure 5, in some embodiments, the temperature measuring member 113 can be a thermocouple or an NTC probe. A K-type thermocouple can be used as the thermocouple. The temperature measuring member 113 may include a temperature measuring probe 1131 and a temperature measuring lead wire 1132 connected to the temperature measuring probe 1131. The portion of the temperature measuring lead wire 1132 located between the temperature measuring probe 1131 and the mounting bracket 114 includes at least one bent segment 1132a, and the presence of prepressure at all times ensures that the temperature measuring probe 1131 is in close contact with the inner wall of the pipe 112 or in close contact with the lower end of the heating element 1111, thereby improving the reliability of temperature measurement.

[0034] The distance from the temperature measuring probe 1131 to the top of the heating element 111 is 8 mm or more and 20 mm or less. When the temperature measuring probe 1131 is provided on the outer wall of the tube 112, the insertion of the aerosol-forming substrate 100 is prevented from interfering with the temperature measuring probe 1131. When the temperature measuring probe 1131 is provided on the inner wall of the tube 112, the above distance reduces the effect of high temperature on the heating element 1111 and allows for accurate feedback of the tube wall temperature. The temperature measuring lead wire 1132 may be electrically connected to the host 20 to provide feedback of temperature information.

[0035] The temperature measuring member 113 further includes a fixing structure and an insulating layer. The fixing structure is used to prevent the temperature measuring probe 1131 of the temperature measuring member 113 from shifting. In some embodiments, the fixing structure may be provided using a fixing adhesive or a guide tube. The material of the insulating layer may be glass fiber or Teflon®. In some embodiments, the temperature measuring probe 1131 is provided in close contact with the inner wall of the tube 112 and is also provided between the heating base 1111 and the opening 1120 of the tube 112.

[0036] As shown in Figures 6 and 9, the heating element 1111 may include a helical segment 1113 in some embodiments. The heating element 111 further includes a pin segment 1114 connected to one end of the helical segment 1113 toward the opening 1120 of the tube 112. The vertical projection of the temperature measuring probe 1131 on the axis of the tube 112 coincides with the vertical projection of the pin segment 1114 on the axis of the tube 112. That is, in the longitudinal direction of the tube 112, the position of the temperature measuring probe 1131 corresponds to the position of the pin segment 1114. In some embodiments, the temperature measuring probe 1131 is in close contact with the pin segment 1114 to facilitate temperature measurement. In this embodiment, the helical segment 1113 is made of wound heating wire, and the pin segment 1114 may be two parallel heating wires located at the same end of the helical segment 1113. The free ends of the heating wires are approximately parallel to the axis of the helical segment 1113, and the free ends of the two heating wires are electrically connected to the positive and negative terminals of the power supply, respectively, serving as the input and output terminals of the current. In this embodiment, the heating element 111 has relatively low temperature detection sensitivity for the helical segment 1113, a large temperature difference between the helical segment 1113 and the tube 112, and a narrow space around the helical segment 1113. As a result, the detection of the temperature measuring probe 1131 is easily interfered with by the high temperature of the helical segment 1113, which is disadvantageous for timely feedback of the true heating temperature of the aerosol-generating substrate. Since the operating temperature of the helical segment 1113 can reach over 500°C, and even 1000°C, the temperature measuring probe 1131 needs to avoid the high-temperature region of the helical segment 1113 as much as possible. In this embodiment, the temperature of the pin segment 1114 is relatively low, and the temperature measuring probe 1131 can directly measure its temperature and represent the heating temperature of the aerosol-generating substrate. Preferably, the temperature measuring probe 1131 is in close contact with the inner wall of the tube and its contact position corresponds to the position of the pin segment 1114, so as to more accurately reflect the heating temperature of the aerosol-generating substrate.In some embodiments, the pin segment 1114 is part of the heat-generating substrate 1111, meaning that the pin segment 1114 and the helical segment 1113 are formed by winding them together, or that the pin segment 1114 and the helical segment 1113 are formed from the same material.

[0037] In some embodiments, the heating assembly 11 may further include a conductive portion 1110 connected to the lower end of the heating member 111. The conductive portion 1110 is electrically connected to the pin segment 1114 and the power supply in the host 20, respectively, to supply electrical energy to the heating member 111. The number of conductive portions 1110 may be two or other numbers. The conductive portion 1110 and the pin segment 1114 form a first connection portion 1115. Thus, the first connection portion is connected below the helical segment 1113 and located above the mounting bracket 114. In some embodiments, the temperature measuring probe 1131 is located between the first connection portion 1115 and the helical segment 1113 in the axial direction of the tube 112, and preferably the temperature measuring probe 1131 is provided in close contact with the inner wall of the tube.

[0038] Furthermore, the temperature measuring probe 1131 is located above the mounting bracket 114. The mounting bracket 114 and the area below it have complex heat conduction conditions, large temperature changes, and many influencing factors. As a result, the temperature detection of the temperature measuring probe 1131 generally exhibits hysteresis, which is unfavorable for reflecting the true heating temperature of the aerosol-generating substrate. In addition, the limited space in the above-mentioned area makes mounting the temperature measuring probe 1131 difficult.

[0039] The tube 112 is made of transparent quartz material, has a closed conical shape at its upper end, and a substantially cylindrical body, with at least a portion of the body attached to the lower housing 122, and an opening 1120 provided at its bottom. The infrared light generated by the heating member 111 passes through the tube 112 and is transmitted to the medium portion of the aerosol-forming substrate 100, heating the aerosol-forming substrate 100 to generate an aerosol. As can be understood, the tube 112 may be made of a material other than transparent quartz material that can effectively transmit infrared light and is heat-resistant. The tube 112 has a transmittance of 50% or more for infrared light with wavelengths of 2-4.75 μm. In some embodiments, the tube 112 may include an insertion segment and a fixed segment connected to the insertion segment. The fixed segment is used to fix it to the lower housing 122. Therefore, at least a portion of the tube 112 can be inserted into the aerosol-forming substrate 100.

[0040] The flange 115 is connected to the bottom of the tube 112 and fitted onto the fixing segment of the tube 112, maintaining a certain distance from the insertion segment, i.e., the flange 115 does not come into contact with the aerosol-forming substrate 100. There is a gap between the flange 115 and the insertion segment, and the position of the temperature measuring probe 1131 corresponds to the position of this gap. The flange 115 is used to fix the tube 112, thereby preventing loosening or excessive stress from occurring at the connection point between the tube 112 and the lower housing 122, and allowing the tube 112 to be stably fixed by the lower housing 122. The flange 115 can also be used to fix the temperature measuring member 113 so that the temperature measuring member 113 is fixed to the outside of the tube 112. This allows the temperature measuring member 113 to more directly measure the temperature of the aerosol-forming substrate 100 and adjust the temperature of the heating assembly 11.

[0041] In some embodiments, the mounting bracket 114 may include a vertically elongated mounting bracket body 1140 and a first mounting groove 1141 provided in the mounting bracket body 1140. The first mounting groove 1141 is provided on the outer surface of the mounting bracket body 1140 and extends along the length of the mounting bracket body 1140. The number of first mounting grooves 1141 may be one, two, three, or more. The conductive parts 1110 and the temperature measuring lead wires 1132 are attached to the first mounting grooves 1141 and connected to the host 20 through the first mounting grooves 1141. In some embodiments, there are four first mounting grooves 1141, two of which are used to attach two conductive parts 1110, and the other two are used to attach the temperature measuring lead wires 1132. Also, if there are two conductive parts 1110, mounting holes may be provided in the middle of the mounting bracket body 1140 for the two conductive parts 1110 to pass through. In some embodiments, there are three first mounting grooves 1141, each to which two conductive parts 1110 and temperature measuring lead wires 1132 are attached. When the temperature measuring member 113 is mounted on the outside of the pipe body 112, it can be understood that the two conductive parts 1110 may each be inserted into the flange 115.

[0042] In some embodiments, the multiple first mounting grooves 1141 are spaced apart and penetrate the upper and lower surfaces of the mounting bracket body 1140, so that the multiple lead wires attached to the first mounting grooves 1141 do not affect each other. The multiple first mounting grooves 1141 may be spaced apart and parallel to each other.

[0043] The temperature measuring probe 1131 is located at the upper end of the mounting bracket 114 (the end away from the opening 1120 of the pipe body 112), and is higher than the upper end surface of the mounting bracket 114 in the vertical direction, with a distance of 5 mm or less from the temperature measuring probe 1131 to the upper end surface of the mounting bracket 114. The specific position of the temperature measuring probe 1131 is related to the position of the heating element 1111, and by being located at the bottom end of the heating element 111, it is possible to effectively reduce the effect of the high temperature from the heating element 1111 on the temperature measuring effect of the temperature measuring probe 1131.

[0044] Since the mounting bracket 114 is installed inside the pipe body 112 and the first mounting groove 1141 is provided on the outer surface of the mounting bracket body 1140, the first mounting groove 1141 can form a first mounting space 1142 together with the inner wall surface of the pipe body 112. The conductive part 1110 and the temperature measuring lead wire 1132 can be installed in the first mounting space 1142. Specifically, since the temperature measuring lead wire 1132 can be installed inside or outside the pipe body 112, if the temperature measuring lead wire 1132 is installed inside the pipe body 112, the temperature measuring lead wire 1132 is installed in the first mounting space 1142.

[0045] In some embodiments, the flange 115 may include a flange body 1150 and a mounting opening 1151 that is opened in the center of the flange body 1150 and penetrates the flange body 1150 vertically. The mounting opening 1151 is circular and can engage with the bottom of the pipe body 112 to fix the pipe body 112 to the flange 115.

[0046] In some embodiments, the flange 115 may further include a second mounting groove 1152. The second mounting groove 1152 is formed on the inner wall surface of the mounting opening 1151, communicates with the mounting opening 1151, and penetrates the upper and lower surfaces of the flange body 1150 vertically. When the temperature measuring member 113 is mounted on the outside of the pipe 112, the second mounting groove 1152 can be used to accommodate the temperature measuring lead wire 1132 of the temperature measuring member 113.

[0047] Since the pipe body 112 is attached to the mounting opening 1151 of the flange 115, the outer wall surface of the pipe body, together with the second mounting groove 1152, defines a second mounting space 1153. If the temperature measuring member 113 is provided outside the pipe body 112, the temperature measuring lead wire 1132 is attached to the second mounting space 1153.

[0048] The temperature measuring probe 1131 is in close contact with the outer wall of the tube 112, higher than the upper end of the flange 115, and at least 2 mm higher than the upper end surface of the flange 115 (the distance to the flange 115 is 2 mm or more), and does not come into contact with the aerosol-forming substrate 100 (lower than the insertion segment). This prevents the temperature measuring probe 1131 from being too far from the aerosol-forming substrate 100 to measure its temperature, thus preventing interference with the aerosol-forming substrate 100. The temperature measuring probe 1131 does not extend beyond the bottom of the aerosol-forming substrate 100 attached to the heating assembly 11, that is, it is lower than the insertion segment of the tube 112 (the distance to the insertion segment is 0 mm or more), thereby preventing damage or displacement of the temperature measuring probe 1131 due to insertion and removal. As the user smokes, the heat in the aerosol-forming substrate 100 can be removed in a timely manner. Therefore, the temperature measuring probe 1131 provided at the above position can provide more accurate and timely feedback on temperature changes, resulting in better temperature control and a better heating atomization effect.

[0049] The lead wires attached to the first mounting space 1142 and the second mounting space 1153 do not make complete contact with the mounting space, and elements such as K-type thermocouples have a certain degree of flexibility. Therefore, if they are not fixed in place, their position may shift, potentially causing abnormal temperature measurements or localized high temperatures. Accordingly, the lead wires attached to the first mounting space 1142 and the second mounting space 1153 can be fixed by filling them with high-temperature adhesive. In addition to filling with high-temperature adhesive, other fixing methods such as adding fixing blocks can also be applied.

[0050] As shown in Figures 11 to 13, in some embodiments, the heating assembly 11 may be tubular. Unlike the embodiment in which a needle-shaped central heating member heats the aerosol-forming substrate 100, the tubular heating assembly 11 is heated by an outer heating element. The tubular body 112 of the heating assembly 11 is provided in a two-layer tubular shape and includes a housing cavity 1121 for housing at least a portion of the aerosol-forming substrate 100. At least a portion of the aerosol-forming substrate 100 is attached to the housing cavity 1121, and the temperature measuring probe 1131 is provided inside or outside the tubular body 112.

[0051] When the temperature measuring probe 1131 is located inside the pipe 112, it may specifically be located at the bottom of the housing cavity 1121. When the temperature measuring probe 1131 is located outside the pipe 112, it is located on the outside of the pipe 112 and is in close contact with the outer wall surface of the pipe 112.

[0052] In some embodiments, the heating assembly 11 is tubular in shape, and the tube 112 includes a first tube 1122 and a second tube 1123 fitted to the outside of the first tube 1122 at a distance from it. The heating base 1111 is provided at a distance from the first tube 1122 and the second tube 1123, and also at a distance from the outer wall of the first tube 1122, thereby preventing localized overheating and scorching of the aerosol-forming substrate 100 installed inside the second tube 1123, which would affect the user's taste and aroma. In some embodiments, the temperature measuring probe 1131 is provided on the inner wall of the second tube 1123 and may be fixed to the inner wall surface of the second tube 1123 with a high-temperature adhesive or the like.

[0053] To ensure that it is understood that the above embodiments represent only some of the embodiments of the present invention, and although the description is specific and detailed, it should not be understood as limiting the scope of the present invention. Those skilled in the art can freely combine the above technical features and make some modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Accordingly, any equivalent transformations and modifications made to the claims of the present invention are included within the scope of the claims of the present invention.

Claims

1. A heating assembly comprising a tube (112) that transmits infrared light and a heating element (111) for generating infrared light, The tubular body (112) includes an opening (1120) into which the heating member (111) is inserted, and the heating member (111) is provided in the tubular body (112) and is provided at least partially apart from the wall of the tubular body (112). The heating assembly further includes a temperature measuring member (113), the temperature measuring member (113) includes a temperature measuring probe (1131), and the temperature measuring probe (1131) is provided between the heating member (111) and the opening (1120).

2. The heating assembly according to claim 1, wherein the heating member (111) includes a heat-generating base (1111) and an infrared radiation layer (1112), the infrared radiation layer (1112) is provided on the heat-generating base (1111), and the temperature measuring probe (1131) is provided between the heat-generating base (1111) and the opening (1120).

3. The heating assembly according to claim 2, characterized in that the tube (112) is used to be at least partially inserted into an aerosol-forming substrate, and the temperature measuring member (113) is provided inside the tube (112).

4. The heating assembly according to claim 3, wherein the heating assembly (11) further includes a mounting bracket (114), the mounting bracket (114) is provided inside the pipe (112) through the opening (1120), the temperature measuring member (113) further includes a temperature measuring lead wire (1132) connected to the temperature measuring probe (1131), the temperature measuring lead wire (1132) is fixed to the mounting bracket (114), and the temperature measuring probe (1131) is located at one end of the mounting bracket (114) away from the opening (1120) and is higher in the vertical direction than the end face of the mounting bracket (114) at the end away from the opening (1120).

5. The heating assembly according to claim 4, wherein the heating base (1111) includes a helical segment (1113), and the heating member (111) further includes a pin segment (1114) connected to one end of the helical segment (1113) toward the opening (1120), and the vertical projection of the temperature measuring probe (1131) on the axis of the tube (112) and the vertical projection of the pin segment (1114) on the axis of the tube (112) overlap at least partially.

6. The heating assembly according to claim 3, wherein the heating base (1111) includes a helical segment (1113), the heating member (111) further includes a conductive portion (1110) and a pin segment (1114) connected to one end of the helical segment (1113) toward the opening (1120), a first connection portion (1115) is formed between the conductive portion (1110) and the pin segment (1114), and the temperature measuring probe (1131) is provided between the first connection portion (1115) and the helical segment (1113).

7. The heating assembly according to any one of claims 4 to 6, characterized in that the temperature measuring probe (1131) is provided in close contact with the inner wall of the tube (112).

8. The heating assembly according to claim 5 or 6, characterized in that the temperature measuring probe (1131) is provided in close contact with the pin segment (1114).

9. The heating assembly according to claim 7, characterized in that the portion of the temperature measuring lead wire (1132) located between the temperature measuring probe (1131) and the mounting bracket (114) includes at least one bent segment.

10. The heating assembly according to claim 4, characterized in that the distance from the temperature measuring probe (1131) to the top of the heating member (111) is 8 mm or more and 20 mm or less.

11. The heating assembly according to claim 4, characterized in that the distance between the temperature measuring probe (1131) and one end of the mounting bracket (114) away from the opening (1120) is 5 mm or less.

12. The heating assembly according to claim 1, characterized in that the tube (112) is used to be at least partially inserted into an aerosol-forming substrate, the temperature measuring member (113) is provided outside the tube (112), and the temperature measuring probe (1131) is in close contact with the outer wall of the tube (112).

13. The heating assembly according to claim 12, wherein the tubular body (112) includes an insertion segment and a fixed segment connected to the insertion segment, the heating assembly (11) further includes a flange (115), the flange (115) being fixed to the fixed segment and having a gap with respect to the insertion segment, and the temperature measuring probe (1131) corresponding to the gap.

14. The heating assembly according to claim 13, characterized in that the distance from the temperature measuring probe (1131) to the flange (115) is 2 mm or more, and the distance to the insertion segment is 0 mm or more.

15. The heating assembly according to claim 1, characterized in that the temperature measuring member (113) includes a thermocouple or an NTC temperature measuring element.

16. The heating assembly according to claim 1, characterized in that a containment cavity (1121) for containing at least a portion of the aerosol-forming substrate is formed inside the tube (112), and the temperature measuring probe (1131) is provided at the bottom of the containment cavity (1121) or on the outside of the tube (112).

17. The heating assembly according to claim 16, wherein the tubular body (112) includes a first tubular body (1122) and a second tubular body (1123) fitted to the outside of the first tubular body (1122), the heating member (111) is provided with a gap between the first tubular body (1122) and the second tubular body (1123) and with a gap between it and the outer wall of the first tubular body (1122), and the temperature measuring probe (1131) is provided on the inner wall of the second tubular body (1123).

18. An aerosol generator comprising a heating assembly according to any one of claims 1 to 16.

Images