A device for detecting temperature of heating cavity of heated cigarette smoking device

Abstract

The present invention discloses a device for detecting the temperature of a heating chamber of a heated cigarette smoking device, which relates to the technical field of heated cigarettes. The device comprises two symmetrically arranged fixing seats, and a plurality of temperature measuring tubes fixedly installed between the two fixing seats. The plurality of temperature measuring tubes are coaxially arranged, and the diameter of the temperature measuring tubes gradually increases from the inside to the outside. A plurality of temperature measuring groups are provided on the outer wall of each temperature measuring tube, and the plurality of temperature measuring groups are evenly arranged along the axial direction of the temperature measuring tube. One temperature measuring group comprises a plurality of thermocouples, and the plurality of thermocouples are evenly arranged circumferentially along the outer wall of the temperature measuring tube. The device for detecting the temperature of a heating chamber of a heated cigarette smoking device of the present invention is capable of performing multi-point detection of the axial and radial heating fields within the heating chamber. Compared with traditional detection methods, the device has more detection positions, is more comprehensive in detection positions, and is more conducive to the subsequent research and development of heated cigarettes.

Description

Technical Field

[0001] The present invention relates to the technical field of heated cigarettes, and in particular to a device for detecting the temperature of a heating cavity of a heated cigarette smoking device. Background Art

[0002] Heated cigarettes refer to tobacco products that are heated at around 300°C without burning. They often use smoking devices to release substances such as nicotine and flavor components in tobacco through electric heating or other heating methods, producing smoke that can be inhaled. Compared with traditional cigarettes that release smoke in the form of high-temperature cracking, due to their lower temperature, they significantly reduce harmful components while reducing environmental smoke pollution. Therefore, heated cigarettes are one of the important development directions of the future tobacco industry.

[0003] During the research and development process, it is necessary to monitor the heating temperature at various positions in the heating chamber of the smoking device in order to understand the temperature field of the smoking device in the heating state. In the existing technology, most of them adopt the method of directly sticking thermocouples on the inner wall of the heating chamber of the smoking device. There are fewer temperature measurement points, and only the temperature in the axial direction of the inner wall of the heating chamber can be measured. For the temperature field in the radial direction, fixed-point measurement cannot be performed. Summary of the Invention

[0004] In response to the above problems, the purpose of the present invention is to design and provide a temperature detection device for the heating chamber of a heated cigarette smoking device, which can perform multi-point detection of the axial and radial heating fields in the heating chamber according to the spacing between multiple coaxially arranged temperature measuring tubes. Compared with traditional detection methods, the detection positions are more numerous and more comprehensive, which is more conducive to the subsequent research and development of heated cigarettes.

[0005] The present invention solves the above technical problems through the following technical means:

[0006] A device for detecting the temperature of a heating chamber of a heated cigarette, comprising two symmetrically arranged fixing seats and a plurality of temperature measuring tubes fixedly installed between the two fixing seats. The plurality of temperature measuring tubes are coaxially arranged, and the diameters of the temperature measuring tubes gradually increase from the inside to the outside. A plurality of temperature measuring groups are arranged on the outer wall of each temperature measuring tube, and the plurality of temperature measuring groups are evenly arranged along the axial direction of the temperature measuring tube. One temperature measuring group comprises a plurality of thermocouples, and the plurality of thermocouples are evenly arranged circumferentially along the outer wall of the temperature measuring tube.

[0007] Furthermore, a plurality of slots are provided on the two fixing seats, and the number and size of the slots match the number and size of the temperature measuring tubes.

[0008] Furthermore, the device includes 3-8 coaxially arranged temperature measuring tubes, and the distance between two adjacent temperature measuring tubes is 1-1.5 mm.

[0009] Furthermore, the temperature measuring tube has a diameter of 5.4-7.8 mm and a thickness of less than 0.3 mm.

[0010] Furthermore, the temperature measuring device includes four coaxially arranged temperature measuring tubes, the diameter of the central temperature measuring tube is 1 mm, and the diameter of the outermost temperature measuring tube is 6.4 mm.

[0011] Furthermore, 55-80 parts of polybenzimidazole, 20-40 parts of thermal conductive filler, 1-3 parts of compatibilizer, 3-6 parts of plasticizer, 1-5 parts of antioxidant, and 3.5-5.5 parts of surfactant.

[0012] Furthermore, the compatibilizer is AX8900, the plasticizer is dioctyl phthalate, the antioxidant is a phenolic antioxidant, and the surfactant is perfluorooctanamide-1,2-ethylidene pyridinium iodide.

[0013] Furthermore, the thermally conductive filler is obtained by wrapping a molybdenum disulfide layer around graphene oxide and then treating it with a silane coupling agent containing an epoxy end group, and the molybdenum disulfide layer has a mesoporous structure.

[0014] Furthermore, the preparation method of the thermally conductive filler is:

[0015] Encapsulation: Take the pretreated graphene oxide, add it to distilled water, add hexadecyltrimethylammonium bromide at the same time, and ultrasonically disperse it for 24 hours to obtain a graphene dispersion. Weigh anhydrous sodium molybdate and add it to deionized water. Stir and dissolve it at a speed of 500r / min. Continue stirring, add the graphene dispersion, stir and mix, and slowly add L-cysteine. After the addition is completed, continue stirring and react for 2-3 hours. Adjust the pH to 6 with 0.1mol / L sodium hydroxide solution, seal it for 7-8 days, and then transfer it to an autoclave. Hydrothermal reaction is carried out at a temperature of 180-220°C for 24 hours. After the reaction is completed, place the reaction product in a high-temperature tube furnace, introduce a mixed gas of hydrogen and argon, and calcine at a temperature of 800°C for 2 hours to obtain a graphene oxide encapsulated with a molybdenum disulfide layer;

[0016] Grafting: The particles prepared in the encapsulation step are vacuum treated for 1 hour, then ultrasonically dispersed in anhydrous toluene under inert gas protection, and a silane coupling agent containing an epoxy end group is added. Ultrasonic stirring is continued for 30-45 minutes, and the mixture is kept refluxed at 110°C for 24 hours. After the reaction is completed, the mixture is filtered, and the filter cake is dispersed and washed three times with anhydrous ethanol, and dried to obtain a thermally conductive filler.

[0017] Graphene oxide has good thermal conductivity. The addition of graphene oxide can effectively improve the thermal conductivity of the matrix material. However, due to the poor compatibility between graphene oxide and the matrix material, graphene oxide cannot be evenly dispersed in the matrix material. By wrapping a molybdenum disulfide layer on the surface of graphene oxide, on the one hand, molybdenum disulfide can not only act as a buffer transition layer, but also improve the dispersion of graphene oxide in the matrix material, which is conducive to the formation of a thermal conductive network, and at the same time can reduce the cross-sectional thermal resistance between the thermally conductive filler and the matrix material; on the other hand, molybdenum disulfide has good lubrication properties and can effectively improve the machinability of the material. Finally, after being treated with a silane coupling agent containing an epoxy end group, the interfacial bonding strength between the matrix material and the thermally conductive filler can be enhanced, which is conducive to improving the thermal conductivity of the matrix material.

[0018] Furthermore, the graphene oxide is pretreated as follows: weighing graphene oxide, adding it to distilled water, dispersing it with ultrasonic stirring, adding hydrazine hydrate at the same time, stirring and mixing to obtain a dispersion, placing it in an autoclave for hydrothermal reaction for 24-26 hours, naturally cooling it to room temperature, filtering it, washing the filter cake with anhydrous ethanol and deionized water, drying it, and grinding it for later use.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention provides a device for detecting the temperature of the heating chamber of a heated cigarette smoking device. The device utilizes multiple temperature measuring tubes of different diameters to form a sleeve, thereby dividing the internal space of the heating chamber. This device can perform multi-point detection of the axial and radial heating fields within the heating chamber. Compared with traditional detection methods, the device can detect more and more locations, which is more comprehensive and more conducive to the subsequent research and development of heated cigarettes.

[0021] 2. The temperature detection device for the heating chamber of a heated cigarette smoking device of the present invention improves the raw material of the temperature measuring tube and effectively improves the detection accuracy of the detection device by adding a heat-conductive filler. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the temperature detection device of the present invention;

[0023] Figure 2 It is a schematic diagram of the horizontal cross-section structure of the temperature detection device of the present invention;

[0024] Figure 3 It is a structural diagram of the fixed seat;

[0025] Among them, there are a fixing seat 1, a slot 11, a temperature measuring tube 2, and a thermocouple 3. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to specific embodiments:

[0027] like Figure 1-Figure 3 As shown, a device for detecting the temperature of a heating chamber of a heated cigarette smoking device of the present invention comprises two symmetrically arranged fixing bases 1, and a plurality of temperature measuring tubes 2 fixedly installed between the two fixing bases 1. The two fixing bases 1 are provided with a plurality of card slots 11, the number and size of the card slots 11 match the number and size of the temperature measuring tubes 2, the temperature measuring tubes 2 are inserted into the card slots 11, the maximum inner diameter of the temperature measuring tubes 2 is 5.4-7.8 mm, and the thickness is less than 0.3 mm. The plurality of temperature measuring tubes 2 are coaxially arranged, and the diameter of the temperature measuring tubes 2 gradually increases from the inside to the outside. Specifically, the device comprises 3- There are 8 coaxially arranged temperature measuring tubes 2, and the distance between two adjacent temperature measuring tubes 2 is 1-1.5 mm. Preferably, the temperature detection device of the present invention includes 4 coaxially arranged temperature measuring tubes 2, the diameter of the central temperature measuring tube 2 is 1 mm, and the diameter of the outermost temperature measuring tube 2 is 6.4 mm. Multiple temperature measuring groups are provided on the outer wall of each temperature measuring tube 2, and the multiple temperature measuring groups are evenly arranged along the axial direction of the temperature measuring tube 2. One temperature measuring group includes multiple thermocouples 3, and the multiple thermocouples 3 are evenly arranged circumferentially along the outer wall of the temperature measuring tube 2. Preferably, one temperature measuring group includes four thermocouples 3.

[0028] Example 1

[0029] Preparation of temperature measuring tube 1

[0030] Pretreatment of graphene oxide: Weigh graphene oxide and add it to distilled water with a mass of ten times that of graphene oxide, disperse it with ultrasonic stirring, and at the same time add 80wt% hydrazine hydrate with a mass of 0.2 times that of graphene oxide. Stir and mix to obtain a dispersion, place it in an autoclave for hydrothermal reaction for 26 hours, cool it naturally to room temperature, filter it, wash the filter cake with anhydrous ethanol and deionized water, dry it at 60°C, and grind it for later use.

[0031] Package: Take the pretreated graphene oxide, add it to distilled water, and add 0.03 times the mass of graphene oxide hexadecyltrimethylammonium bromide at the same time, ultrasonically disperse for 24 hours to obtain a graphene dispersion with a mass concentration of 1 mg / ml, weigh anhydrous sodium molybdate and add it to 100 times the mass of anhydrous sodium molybdate in deionized water, stir and dissolve at a speed of 500r / min, continue stirring, add the graphene dispersion, stir and mix, and then slowly add L-cysteine, wherein graphene oxide, anhydrous molybdate The mass ratio of sodium phosphate and L-cysteine is 1:0.1:0.1. After the addition is completed, the stirring reaction is continued for 3 hours, the pH is adjusted to 6 with 0.1 mol / L sodium hydroxide solution, and the mixture is sealed for 8 days. Then, it is transferred to an autoclave and hydrothermally reacted at 180°C for 24 hours. After the reaction is completed, the reaction product is placed in a high-temperature tube furnace and a mixed gas of hydrogen and argon is introduced, wherein the mass fraction of hydrogen is 5%, and calcined at 800°C for 2 hours to obtain graphene oxide wrapped with a molybdenum disulfide layer;

[0032] Grafting: The particles prepared in the encapsulation step are continuously vacuumed at 100°C for 1 hour to remove adsorbed moisture, and then ultrasonically dispersed in 100 times the mass of anhydrous toluene under inert gas protection, and 10 times the mass of graphene oxide-containing silane coupling agent is added. Ultrasonic stirring is continued for 30 minutes, and the mixture is kept refluxed at 110°C for 24 hours. After the reaction is completed, it is filtered, and the filter cake is dispersed and washed three times with anhydrous ethanol, and dried at 60°C to obtain a thermally conductive filler.

[0033] The temperature measuring tube of this embodiment includes the following raw materials in parts by weight: 65 parts of polybenzimidazole, 30 parts of thermal conductive filler, 2 parts of compatibilizer, 4 parts of plasticizer, 5 parts of antioxidant, and 4 parts of surfactant.

[0034] Polybenzimidazole and thermal conductive filler are added to a high-speed mixer, stirred and mixed at a speed of 700 r / min for 2 hours, and then compatibilizer AX8900, plasticizer dioctyl phthalate, antioxidant 1010, and surfactant perfluorooctanamide-1,2-ethylene pyridinium iodide are added, and then stirred and mixed at a speed of 800 r / min for 3 hours to obtain a mixture. The mixture is placed in an extruder, heated to a molten state and extruded to obtain temperature measuring tubes of different diameters.

[0035] Thermocouples are attached to the outer walls of temperature measuring tubes with different diameters, and then a large tube is sheathed in a small tube and installed on a fixed seat to obtain a detection device for measuring the temperature of the heating chamber.

[0036] Example 2

[0037] Preparation of temperature measuring tube 2

[0038] Pretreatment of graphene oxide: Weigh graphene oxide and add it to distilled water with a mass ten times that of graphene oxide, disperse it with ultrasonic stirring, and at the same time add 80wt% hydrazine hydrate with a mass 0.3 times that of graphene oxide, stir and mix to obtain a dispersion, place it in an autoclave for hydrothermal reaction for 25h, cool it naturally to room temperature, filter it, wash the filter cake with anhydrous ethanol and deionized water, dry it at 60°C, and grind it for later use.

[0039] Package: Take the pretreated graphene oxide, add it to distilled water, and add 0.02 times the mass of graphene oxide hexadecyltrimethylammonium bromide at the same time, ultrasonically disperse for 24 hours to obtain a graphene dispersion with a mass concentration of 1 mg / ml, weigh anhydrous sodium molybdate and add it to 100 times the mass of anhydrous sodium molybdate in deionized water, stir and dissolve at a speed of 500r / min, continue stirring, add the graphene dispersion, stir and mix, and then slowly add L-cysteine, wherein graphene oxide, anhydrous molybdate The mass ratio of sodium phosphate and L-cysteine is 1:0.15:0.2. After the addition is completed, the stirring reaction is continued for 3 hours, the pH is adjusted to 6 with 0.1 mol / L sodium hydroxide solution, and the mixture is sealed for 7 days. Then, it is transferred to an autoclave and hydrothermally reacted at 200°C for 24 hours. After the reaction is completed, the reaction product is placed in a high-temperature tube furnace and a mixed gas of hydrogen and argon is introduced, wherein the mass fraction of hydrogen is 5%, and calcined at 800°C for 2 hours to obtain graphene oxide wrapped with a molybdenum disulfide layer;

[0040] Grafting: The particles prepared in the encapsulation step were continuously vacuumed at 100°C for 1 hour to remove adsorbed moisture, and then ultrasonically dispersed in 100 times the mass of anhydrous toluene under inert gas protection, and 10 times the mass of graphene oxide-containing silane coupling agent was added. Ultrasonic stirring was continued for 45 minutes, and the mixture was kept refluxed at 110°C for 24 hours. After the reaction was completed, it was filtered, and the filter cake was dispersed and washed three times with anhydrous ethanol, and dried at 60°C to obtain a thermally conductive filler.

[0041] The temperature measuring tube of this embodiment includes the following raw materials in parts by weight: 80 parts of polybenzimidazole, 40 parts of thermal conductive filler, 3 parts of compatibilizer, 6 parts of plasticizer, 2 parts of antioxidant, and 3.5 parts of surfactant.

[0042] Polybenzimidazole and thermal conductive filler are added to a high-speed mixer, stirred and mixed at a speed of 650 r / min for 1 hour, and then compatibilizer AX8900, plasticizer dioctyl phthalate, antioxidant 1010, and surfactant perfluorooctanamide-1,2-ethylene pyridinium iodide are added, and then stirred and mixed at a speed of 800 r / min for 3 hours to obtain a mixture. The mixture is placed in an extruder, heated to a molten state and extruded to obtain temperature measuring tubes of different diameters.

[0043] Thermocouples are attached to the outer walls of temperature measuring tubes with different diameters, and then a large tube is sheathed in a small tube and installed on a fixed seat to obtain a detection device for measuring the temperature of the heating chamber.

[0044] Example 3

[0045] Preparation of temperature measuring tube 3

[0046] Pretreatment of graphene oxide: Weigh graphene oxide and add it to distilled water with a mass ten times that of graphene oxide, disperse it with ultrasonic stirring, and at the same time add 80wt% hydrazine hydrate with a mass of 0.15 times that of graphene oxide, stir and mix to obtain a dispersion, place it in an autoclave for hydrothermal reaction for 26 hours, cool it naturally to room temperature, filter it, wash the filter cake with anhydrous ethanol and deionized water, dry it at 60°C, and grind it for later use.

[0047] Package: Take the pretreated graphene oxide, add it to distilled water, and add 0.04 times the mass of graphene oxide hexadecyl trimethyl ammonium bromide at the same time, ultrasonically disperse for 24 hours to obtain a graphene dispersion with a mass concentration of 1.5 mg / ml, weigh anhydrous sodium molybdate and add it to 100 times the mass of anhydrous sodium molybdate in deionized water, stir and dissolve at a speed of 500 r / min, continue stirring, add the graphene dispersion, stir and mix, and then slowly add L-cysteine, wherein graphene oxide, anhydrous The mass ratio of sodium molybdate to L-cysteine is 1:0.2:0.1. After the addition is completed, the stirring reaction is continued for 2 hours, the pH is adjusted to 6 with 0.1 mol / L sodium hydroxide solution, and the mixture is sealed for 8 days. Then, it is transferred to an autoclave and hydrothermally reacted at 220°C for 24 hours. After the reaction is completed, the reaction product is placed in a high-temperature tube furnace and a mixed gas of hydrogen and argon is introduced, wherein the mass fraction of hydrogen is 5%, and calcined at 800°C for 2 hours to obtain graphene oxide wrapped with a molybdenum disulfide layer;

[0048] Grafting: The particles prepared in the encapsulation step are continuously vacuumed at 100°C for 1 hour to remove adsorbed moisture, and then ultrasonically dispersed in 100 times the mass of anhydrous toluene under inert gas protection, and 10 times the mass of graphene oxide-containing silane coupling agent is added. Ultrasonic stirring is continued for 40 minutes, and the mixture is kept refluxed at 110°C for 24 hours. After the reaction is completed, it is filtered, and the filter cake is dispersed and washed three times with anhydrous ethanol, and dried at 60°C to obtain a thermally conductive filler.

[0049] The temperature measuring tube of this embodiment includes the following raw materials in parts by weight: 55 parts of polybenzimidazole, 20 parts of thermal conductive filler, 1 part of compatibilizer, 3 parts of plasticizer, 1 part of antioxidant, and 5.5 parts of surfactant.

[0050] Polybenzimidazole and thermal conductive filler are added to a high-speed mixer, stirred and mixed at a speed of 700 r / min for 2 hours, and then compatibilizer AX8900, plasticizer dioctyl phthalate, antioxidant 1010, and surfactant perfluorooctanamide-1,2-ethylene pyridinium iodide are added, and then stirred and mixed at a speed of 800 r / min for 3 hours to obtain a mixture. The mixture is placed in an extruder, heated to a molten state and extruded to obtain temperature measuring tubes of different diameters.

[0051] Thermocouples are attached to the outer walls of temperature measuring tubes with different diameters, and then a large tube is sheathed in a small tube and installed on a fixed seat to obtain a detection device for measuring the temperature of the heating chamber.

[0052] Comparative Example 1

[0053] The difference between this comparative example and Example 1 is that no thermal conductive filler is added during the preparation of the temperature measuring rod of this comparative example.

[0054] Comparative Example 2

[0055] The difference between this comparative example and Example 1 is that the thermal conductive filler in this comparative example is conventional graphene oxide.

[0056] The thermal conductivity and heat resistance of the detection devices prepared in Examples 1 to 3, Comparative Example 1, and Comparative Example 2 were tested, and the experimental results are shown in the following table:

[0057]

[0058] It can be seen that the detection device of the present invention, through structural design, can perform axial and radial multi-point detection on the temperature field in the heating chamber, and reflect the heating condition of the heating chamber from a three-dimensional space. At the same time, the raw material of the temperature measuring tube is designed, and the detection accuracy of the detection device can be effectively improved by adding thermally conductive fillers.

[0059] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalents shall be encompassed by the claims of the present invention. Any techniques, shapes, and structures not described in detail herein are well known.

Claims

1. A device for detecting the temperature of a heating chamber of a heated cigarette smoking device, characterized in that: The device includes two symmetrically arranged fixing seats and a plurality of temperature measuring tubes fixedly installed between the two fixing seats. The plurality of temperature measuring tubes are coaxially arranged, and the diameter of the temperature measuring tubes gradually increases from the inside to the outside. A plurality of temperature measuring groups are arranged on the outer wall of each temperature measuring tube. The plurality of temperature measuring groups are evenly arranged along the axial direction of the temperature measuring tube. One temperature measuring group includes a plurality of thermocouples, and the plurality of thermocouples are evenly arranged along the circumference of the outer wall of the temperature measuring tube. The temperature measuring tube includes the following raw materials in parts by weight: 55-80 parts of polybenzimidazole, 20 -40 parts of thermally conductive filler, 1-3 parts of compatibilizer, 3-6 parts of plasticizer, 1-5 parts of antioxidant, and 3.5-5.5 parts of surfactant; the compatibilizer is AX8900, the plasticizer is dioctyl phthalate, the antioxidant is a phenolic antioxidant, and the surfactant is perfluorooctanamide-1,2-ethylidene pyridinium iodide; the thermally conductive filler is obtained by wrapping a molybdenum disulfide layer around graphene oxide and then treating it with a silane coupling agent containing an epoxy end group, and the molybdenum disulfide layer has a mesoporous structure; the preparation method of the thermally conductive filler is: Wrapping: Take the pretreated graphene oxide, add it to distilled water, add hexadecyltrimethylammonium bromide at the same time, and ultrasonically disperse it for 24 hours to obtain a graphene dispersion. Weigh anhydrous sodium molybdate and add it to deionized water. Stir and dissolve it at a speed of 500r / min. Continue stirring, add the graphene dispersion, stir and mix, and slowly add L-cysteine. After the addition is completed, continue stirring and react for 2-3 hours. Adjust the pH to 6 with 0.1mol / L sodium hydroxide solution, seal it for 7-8 days, and then transfer it to an autoclave. Hydrothermal reaction is carried out at a temperature of 180-220°C for 24 hours. After the reaction is completed, place the reaction product in a high-temperature tube furnace, introduce a mixed gas of hydrogen and argon, and calcine at a temperature of 800°C for 2 hours to obtain a graphene oxide wrapped with a molybdenum disulfide layer; Grafting: The particles prepared in the encapsulation step are vacuum treated for 1 hour, then ultrasonically dispersed in anhydrous toluene under inert gas protection, and a silane coupling agent containing an epoxy end group is added. Ultrasonic stirring is continued for 30-45 minutes, and the mixture is kept refluxed at 110°C for 24 hours. After the reaction is completed, the mixture is filtered, and the filter cake is dispersed and washed three times with anhydrous ethanol, and dried to obtain a thermally conductive filler.

2. The device for detecting the temperature of the heating chamber of a heated cigarette smoking device according to claim 1, characterized in that: A plurality of slots are provided on the two fixing seats, and the number and size of the slots match the number and size of the temperature measuring tubes.

3. The device for detecting the temperature of the heating chamber of a heated cigarette smoking device according to claim 2, characterized in that: The device comprises 3-8 coaxially arranged temperature measuring tubes, and the distance between two adjacent temperature measuring tubes is 1-1.5 mm.

4. The device for detecting the temperature of the heating chamber of a heated cigarette smoking device according to claim 3, characterized in that: The maximum inner diameter of the temperature measuring tube is 5.4-7.8 mm, and the thickness is less than 0.3 mm.

5. The device for detecting the temperature of the heating chamber of a heated cigarette smoking device according to claim 4, characterized in that: The device includes four coaxially arranged temperature measuring tubes, the inner diameter of the central temperature measuring tube is 1 mm, and the inner diameter of the outermost temperature measuring tube is 6.4 mm.

6. The device for detecting the temperature of the heating chamber of a heated cigarette smoking device according to claim 1, characterized in that: The graphene oxide pretreatment comprises the following steps: weighing graphene oxide, adding it into distilled water, dispersing it with ultrasonic stirring, adding hydrazine hydrate at the same time, stirring and mixing to obtain a dispersion, placing it into an autoclave for hydrothermal reaction for 24-26 hours, cooling it naturally to room temperature, filtering it, washing the filter cake with anhydrous ethanol and deionized water, drying it, and grinding it for later use.

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