Temperature measuring device of aerosol generating device

Abstract

The application discloses a temperature measuring device capable of being used for an aerosol generating device, the aerosol generating device comprising a hollow cylindrical heating cavity, the heating cavity having an opening through which an aerosol generating substrate can be inserted, the temperature measuring device measuring the temperature of the heating cavity in the aerosol generating device in a working state, the temperature measuring device comprising: an operation part, a telescopic part and a temperature sensor, the temperature sensor being detachably fixed to the outer wall of the telescopic part, at least a part of the operation part being linked with the telescopic part, the telescopic part being capable of being switched between an expanded state and a contracted state when the operation part is operated, so as to adapt to the temperature measurement of the heating cavities with different inner diameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new tobacco, in particular to a temperature measuring device of an aerosol generating device. BACKGROUND

[0002] The aerosol generating system is a new form of tobacco smoking, and its unique heating method makes it more healthy and environmentally friendly than traditional cigarettes. The emergence of electrically heated cigarettes is due to the progress of science and technology and the improvement of people's health consciousness. In order to maximize the retention of the flavor of traditional tobacco, one research direction is to directly improve the heatable on the basis of traditional cigarettes.

[0003] When measuring the temperature of the heating body of the aerosol generating device, the traditional method needs to manually stick the temperature sensor to the surface of the heating cavity with high-temperature resistant glue (because the temperature of the heating cavity is usually as high as about 300 degrees Celsius), and in order to reduce the error caused by the gap, the temperature sensor needs to be tightly attached to the wall. In practice, the temperature sensor generally uses a thermocouple. However, due to the elasticity of the thermocouple itself, the rework rate is high, and it is usually necessary to manually press for a period of time to wait for the glue to slightly solidify, and it is necessary to place it for more than 10 hours to completely solidify the glue before starting measurement, in order to avoid data errors caused by the thermocouple falling off during measurement; in addition, the temperature distribution of the heating cavity of the aerosol generating device is not uniform, and the temperature distribution cannot be known before testing, so it is necessary to manually paste multiple thermocouples on the surface of the heating cavity to obtain accurate temperature distribution and temperature data at different positions. This makes the operation more complicated, seriously reduces the detection efficiency, and the use of high-temperature resistant glue and the repeated disassembly and pulling of the thermocouple also increases the wear and tear of the thermocouple. For the aerosol generating device, the heating cavity is usually in the form of a hollow cylinder, and it is difficult to accurately stick the thermocouple inside due to its small inner diameter, making the above problems more prominent.

[0004] Therefore, in order to avoid the above deficiencies in the temperature measurement process, it is necessary to develop a temperature measuring device with simple structure, easy operation, high reliability, strong adaptability and accurate temperature measurement. SUMMARY

[0005] The purpose of the present application is to avoid the error and inconvenience of sticking the temperature sensor on the heating cavity for measurement in the temperature measurement process of the aerosol generating device, and the temperature measuring device is easy to operate, simple in structure, small in size, strong in adaptability for different aerosol generating devices, and can be fixed without sticking. The temperature measuring device has higher accuracy in temperature measurement data collection.

[0006] To solve the above technical problems, the present application adopts the following technical solutions:

[0007] A temperature measuring device capable of being used in an aerosol generating device, the aerosol generating device comprising a heating cavity having an opening through which an aerosol generating substrate can be inserted, the temperature measuring device capable of measuring the temperature of the heating cavity in an operating state, the temperature measuring device comprising: an operation part, a telescopic part, and a temperature sensor, a temperature measuring end of the temperature sensor being detachably arranged on an outer wall of the telescopic part, at least a part of the operation part being linked with the telescopic part, the telescopic part being capable of being switched between an expanded state and a contracted state when the operation part is operated, so as to adapt to the temperature measurement of heating cavities with different inner diameters.

[0008] In the contracted state, the telescopic part is contracted radially inward, so that the telescopic part can extend into the inside of the heating cavity from the opening of the heating cavity;

[0009] In the expanded state, the telescopic part is expanded radially outward, so that at least a part of the outer wall of the telescopic part is close to the inner wall of the heating cavity and the temperature measuring end of the temperature sensor is tightly attached to the inner wall of the heating cavity.

[0010] Further, the temperature measuring device further comprises a locking part.

[0011] Further, the locking part cooperates with the operation part, and there are a locked state and an unlocked state.

[0012] Further, in the locked state, the operation part is locked by the locking part.

[0013] Further, the movement of the telescopic part in the radial direction is locked.

[0014] Further, in the unlocked state, the operation part does not interfere with the locking part, and the telescopic part can move in the radial direction.

[0015] Further, the operation part comprises an adjusting member and a guide member.

[0016] Further, the telescopic part comprises a positioning member and a driving member.

[0017] Further, the operation part and the telescopic part are cooperated through the guide member and the driving member, the adjusting member drives the relative movement of the guide member and the driving member, so as to drive the positioning member to contract or expand in the radial direction.

[0018] Further, the guide member comprises a guide groove.

[0019] Further, the driving member comprises a cantilever structure.

[0020] Further, a protrusion is arranged on the cantilever structure, the protrusion being capable of reciprocating in the guide groove along the track of the guide groove, so as to realize the contraction and expansion of the telescopic part.

[0021] Further, the positioning member is arranged in at least two in the circumferential direction.

[0022] Further, the sum of the circumferential angles of all positioning members is less than 360°.

[0023] Further, the number of positioning members is 4, and the circumferential angle of each positioning member is 90°.

[0024] Further, in the contracted state, the positioning members can form a continuous and complete circumference.

[0025] Further, the positioning member is provided with a through hole.

[0026] Further, an opening member is arranged at the position corresponding to the through hole, and the opening member is removably assembled at the through hole.

[0027] Further, the positioning member is at least a double-layer structure, and the positioning member comprises an inner wall and an outer wall.

[0028] Further, the positioning member further comprises a buckle.

[0029] Further, the temperature measuring device further comprises an extension section, the extension section comprises buckles at both axial ends, the buckles can be aligned and buckled with each other, and the extension section extends along the axial length of the contraction and expansion section.

[0030] Further, the outer wall is made of heat-insulating elastic material.

[0031] Further, the temperature measuring device further comprises a base section.

[0032] Further, when measuring temperature, the base section is relatively stationary with the measured heating cavity, and can support and fix the operation section.

[0033] Optionally, the number of positioning members can be composed of any number of arc segments, and the sum of the circumferential angles of each positioning member is less than 360°, and in the contracted state, each positioning member can form at least a part of a complete circumference.

[0034] Optionally, in addition to rotating the operation section to realize the radial expansion and contraction of the positioning members, the related mechanism for the contraction and expansion of the umbrella can also be used to realize the radial expansion and contraction of the positioning members, and the radial expansion and contraction of the positioning members can be realized by pushing and pulling the operation section, which will not be described in detail here.

[0035] The extension section is used to extend the length of the temperature measuring device in the axial direction when the length of the temperature measuring device cannot be adapted to the heating cavity, the extension section has a similar structure to the positioning member, and the extension section is assembled with the positioning member through buckles, can realize synchronous movement with the positioning member, and can be used to assemble and fix the temperature sensor.

[0036] Optionally, the locking portion can interfere with the operating portion in any form to achieve the locking of the radial movement of the contraction portion: for example, for the operating portion of the gear-like guide, the locking portion can interfere with the outer peripheral gear of the guide to achieve the locking; for the operating portion of the disc-like guide, the locking portion can achieve the locking by the form of inserting the surface groove of the guide.

[0037] An aerosol-generating device for illustrating a device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol. Preferably, the aerosol-generating device is a smoking device that interacts with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol that is directly inhalable by a user's mouth into the user's lungs. The aerosol-generating device can be a holder for a smoking article.

[0038] The heating method of the aerosol-generating device can utilize the principle of resistance heating, or the principle of infrared heating and electromagnetic induction heating.

[0039] An aerosol-generating article includes an aerosol-forming substrate that generates, by heating, an aerosol that is directly inhalable by a user's mouth into the user's lungs. Preferably, the aerosol-forming substrate includes nicotine. In some preferred embodiments, the aerosol-forming substrate includes tobacco. For example, the aerosol-forming material can be formed from a sheet of homogenized tobacco.

[0040] The solid aerosol-forming substrate can include one or more of a powder, a granule, a pellet, a shard, a strand, a rod, or a sheet, containing one or more of a herbal plant leaf, a tobacco leaf, a tobacco rib, a flat tobacco, and a homogenized tobacco.

[0041] The aerosol-generating article can include a mouthpiece located at the mouth end of the aerosol-generating article. The mouthpiece can be located immediately downstream of, and in close proximity to, the aerosol-cooling element. The mouthpiece can include a filter. The filter can be formed from one or more suitable filter materials. Many such filter materials are known in the art. In one embodiment, the mouthpiece can include a filter formed from a tow of cellulose acetate.

[0042] The elements of the aerosol-generating article (e.g., the aerosol-forming substrate and any other elements of the aerosol-generating article, such as the support element, the aerosol-cooling element, and the mouthpiece) are surrounded by an outer wrapper. The outer wrapper is formed from any suitable material or combination of materials. Preferably, the outer wrapper is cigarette paper.

[0043] The technical effects of the present invention are as follows:

[0044] The temperature measuring device is simple in structure, convenient to operate, accurate in temperature measurement, capable of arranging multiple temperature measuring points to accurately capture the highest temperature point, and high in adaptability.

[0045] In summary, the temperature measuring device is simple in structure, convenient to operate, accurate in temperature measurement, capable of arranging multiple temperature measuring points to accurately capture the highest temperature point, and high in adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0046] The above technical content and the following specific embodiments of the present application can be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are only examples of the claimed technical solutions. In the drawings, the same reference numerals represent the same or similar elements. Unless otherwise specified, the figures in the drawings do not constitute a proportional limitation.

[0047] Figure 1 is a half sectional view of the temperature measuring device provided by Embodiment 1 of the present application;

[0048] Figure 2 is an exploded view of the temperature measuring device provided by Embodiment 1 of the present application;

[0049] Figure 3 is a cooperation diagram of the operating part and the contraction part of the temperature measuring device provided by Embodiment 1 of the present application;

[0050] Figure 4 is a cooperation diagram of the operating part, the contraction part and the locking part of the temperature measuring device provided by Embodiment 1 of the present application;

[0051] Figure 5 is a top view of the temperature measuring device provided by Embodiment 1 of the present application in a contracted state;

[0052] Figure 6 is a top view of the temperature measuring device provided by Embodiment 1 of the present application in an expanded state;

[0053] Figure 7 is a sectional view of the temperature measuring device provided by Embodiment 1 of the present application;

[0054] Figure 8 is an application diagram of the temperature measuring device provided by the present application;

[0055] Figure 9is a cooperation diagram of the extension section and the contraction section provided in Embodiment 1 of the present application;

[0056] Figure 10 is a buckle detail diagram provided in Embodiment 1 of the present application.

[0057] Wherein, the reference signs are explained as follows:

[0058] Temperature sensor 10

[0059] Data acquisition instrument 11

[0060] Computer 12

[0061] Heating cavity 13

[0062] Base part 100

[0063] Operation part 200

[0064] Adjusting piece 210

[0065] Guide piece 220

[0066] Guide groove 221

[0067] Contraction part 300

[0068] Positioning piece 310

[0069] Inner wall 311

[0070] Outer wall 312

[0071] Opening piece 313

[0072] Driving piece 320

[0073] Bump 321

[0074] Buckle 340

[0075] Extension section 350

[0076] Locking part 400

[0077] Locking piece 410

[0078] Dial block 420 DETAILED DESCRIPTION

[0079] The detailed features and advantages of the present application are described in the following detailed description of the application, which is sufficient to enable a person skilled in the art to understand the technical content of the present application and to implement it, and according to the present specification, claims and drawings, a person skilled in the art can easily understand the related purposes and advantages of the present application.

[0080] For ease of understanding, the directional terms such as "front" and "rear" used in this specification refer to the end closer to the adjusting member 210 as rear and the extension direction of the extension section 350 as front.

[0081] like Figure 1 The temperature measuring device shown is a half-sectional view. The temperature measuring device includes a base 100, an operating part 200, a retractable part 300, and a locking part 400. This temperature measuring device is suitable for measuring the temperature of the heating chamber 13 of the aerosol generating device. The heating chamber 13 has an opening that allows the aerosol generating matrix to be inserted. The temperature measuring device is cylindrical in shape and is inserted into the cavity of the heating chamber 13 through the opening during measurement.

[0082] like Figure 2 An exploded view of the temperature measuring device is shown. During temperature measurement, the base 100 supports the operating part 200. The base 100 is stationary relative to the heating chamber 13 being measured, thus fixing the operating part 200.

[0083] Specifically, the base 100 is cylindrical in shape, and at least part of the operating part 200 is fitted inside the base 100. When operating the operating part 200, the user holds the base 100 with one hand and operates the operating part 200 with the other hand.

[0084] The operating unit 200 includes an adjusting member 210 and a guide member 220, and the contraction / expansion unit 300 includes a positioning member 310 and a driving member 320. The operating unit 200 and the contraction / expansion unit 300 are engaged through the guide member 220 and the driving member 320. By operating the adjusting member 210, the guide member 220 and the driving member 320 can be driven to move relative to each other, thereby driving the positioning member 310 to contract or expand radially. The locking unit 400 can cooperate with the operating unit 200, and by changing the relative positions of the two parts, the temperature measuring device can be switched between a locked state and an unlocked state.

[0085] Specifically, in Embodiment 1, the guide 220 is a gear structure, and the adjusting member 210 is a slender columnar body perpendicularly connected to the guide 220 at its center. The surface of the guide 220 includes a guide groove 221, which is an arc-shaped groove. The driving member 320 is a cantilever structure, and the temperature measuring device includes four positioning members 310, each being an arc segment with a circumferential angle of 90°. In the retracted state, the four positioning members 310 can form a continuous and complete circumference. The driving member 320 includes a protrusion 321, which engages with the guide groove 221, thereby enabling the guide 220 to engage with the driving member 320. The user rotates the adjusting member 210 to rotate the guide 220, thereby forcing the protrusion 321 to slide back and forth along the trajectory of the guide groove 221 within the guide groove 221, further driving the driving member 320 to extend and retract radially, and ultimately driving the positioning member 310 to extend and retract radially.

[0086] Alternatively, in embodiment 2, the guide 220 is a disk structure.

[0087] In addition to four, the number of positioning elements 310 can also be composed of any number of arc segments. In the contracted state, each positioning element 310 can form at least a part of a complete circumference.

[0088] The locking unit 400 includes a locking member 410 and a lever 420. The user locks the operating unit 200 by moving the lever 420.

[0089] Specifically, the locking element 410 is a slender cylindrical body. The user can operate the lever 420 to move the locking element 410 back and forth along the axis of the temperature measuring device. In use, when the lever 420 is moved backward, the locking element 410 and the guide 220 do not interfere with each other, and the guide 220 can rotate freely. At this time, the temperature measuring device is in the unlocked state. When the lever 420 is moved forward, the locking element 410 and the guide 220 interfere with each other, and the guide 220 cannot rotate, thereby fixing the radial position of the positioning element 310. At this time, the temperature measuring device is in the locked state.

[0090] In embodiment 1, the guide 210 is a gear structure, and the locking member 410 extends forward to intercept the outer peripheral gear edge of the guide 210 for interference.

[0091] In embodiment 2, the surface of the guide 210 is provided with a plurality of grooves, and the locking member 410 extends forward to be able to insert into the grooves on the surface of the guide 210 for interference.

[0092] It is easy to understand that when switching between the contraction and expansion states of the temperature measuring device, the locking part 400 should be moved to the unlocked state.

[0093] like Figure 5 The temperature measuring device is shown in its retracted state. In this state, rotating the adjusting member 210 causes the positioning members 310 to retract radially until they abut against each other. At this time, the positioning members 310 can form a continuous cylinder with each other.

[0094] like Figure 6 The temperature measuring device shown is in an expanded state, with the adjusting member 210 rotated in the opposite direction and the positioning member 310 expanding radially.

[0095] Preferably, the diameter variation range between the contracted and expanded states can reach 3mm-10mm, which basically ensures that it can be inserted into the heating chamber of all aerosol generating devices on the market.

[0096] Alternatively, the contraction and expansion of the retractable section 300 can also be achieved through a related mechanism for the contraction and expansion of the umbrella, which will not be elaborated on here.

[0097] refer toFigure 7 In some embodiments, the positioning member 310 has a double-layer structure, comprising an inner wall 311 and an outer wall 312. The outer wall 312 is made of an elastic insulating material; the positioning member 310 includes a through-hole structure, and an opening member 313 is provided at the corresponding position of the through-hole. The opening member 313 is removably fitted at the through-hole, and the opening member 313 is also made of an elastic insulating material. Figure 7 As shown, when assembling the temperature sensor 10 with the temperature measuring device, the temperature sensor 10 passes through the through-hole structure in the direction of the arrow. After the temperature measuring end of the temperature sensor 10 is placed on the outside of the temperature measuring device and adjusted to the test point, the opening part 313 is closed and cooperates with the through-hole structure to press the temperature sensor 10. Preferably, there are two pressing points. During temperature measurement, the temperature measuring device with the assembled temperature sensor 10 is adjusted to the contracted state and inserted from the opening of the heating cavity 13. Then, the temperature measuring device is adjusted to the expanded state until the outer wall 312 is tightly attached to the inner wall of the heating cavity 13. At this time, the pre-tightening force generated by the elastic deformation of the outer wall 312 presses the temperature sensor 10 tightly onto the inner wall of the heating cavity 13. At this time, the locking part 400 is adjusted to the locked state, thereby fixing the radial movement of the contraction and expansion part 300.

[0098] Specifically, the temperature sensor 10 can be a thermocouple.

[0099] refer to Figure 9 , Figure 10 The temperature measuring device also includes an extension section 350, which has a similar overall structure to the positioning member 310. The extension section 350 and the positioning member 310 are fastened and fixed by a buckle 340. The extension section 350 can move synchronously with the radial movement of the positioning member 310. The extension section 350 is used to extend the length of the expansion section 300 axially to accommodate heating chambers 13 of different lengths.

[0100] refer to Figure 8 To obtain the temperature measurement data for the heating chamber 13, power on the data acquisition instrument 11 and connect it to the computer 12. The computer 12 can record the current measured temperature. Adjust the temperature sensor 10 to the corresponding temperature measurement point and fix it in place. Then, adjust the temperature measuring device to the retracted state and insert it into the heating chamber 13. At the corresponding position, adjust the temperature measuring device to the expanded state and move the lever 420 to the locked state. Start the heating chamber 13. Multiple real-time temperature data can be observed simultaneously on the computer 12.

[0101] The temperature measuring device is simple in structure and convenient to operate, and solves the problems of low temperature measurement accuracy, low efficiency and complexity of the aerosol generating device heating cavity.

[0102] In summary, the temperature measuring device is simple in structure, convenient to operate, accurate in temperature measurement, can arrange multiple temperature measuring points to accurately capture the highest temperature point, and has strong adaptability.

[0103] The terms and expressions herein have been chosen to best describe the application, but the application is not limited to such terms and expressions. The use of such terms and expressions does not exclude any equivalent features from the scope of the claims, and it should be recognized that various modifications can be made within the scope of the claims. Other modifications, changes and substitutions are also possible. Accordingly, the claims should be regarded as covering all such equivalent.

[0104] Similarly, it should be noted that although the application has been described with reference to the current specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the application, and various equivalent changes or substitutions can be made without departing from the spirit of the application, therefore, any changes, modifications of the above embodiments within the scope of the essential spirit of the application will fall within the scope of the claims of the application.

Claims

1. A temperature measuring device capable of being used in an aerosol generating device, the aerosol generating device including a heating cavity (13) having an opening into which an aerosol generating substrate can be inserted, the temperature measuring device being capable of measuring the temperature of the heating cavity (13) in an operating state, characterized in that, The temperature measuring device comprises an operation part (200), a telescopic part (300) and a temperature sensor (10), the temperature measuring end of the temperature sensor (10) is detachably arranged on the outer wall of the telescopic part (300), at least a part of the operation part (200) is linked with the telescopic part (300), and the telescopic part (300) can be switched between the expanded state and the contracted state when the operation part (200) is operated, so as to adapt to the temperature measurement of the heating cavity (13) with different inner diameters. Wherein, The operation part (200) comprises an adjusting part (210) and a guide part (220) provided with a guide groove (221), the telescopic part (300) comprises a positioning part (310) and a driving part (320) comprising a cantilever structure, and the cantilever structure is further provided with a protruding block (321) matched with the guide groove (221). By operating the adjusting part (210), the guide part (220) is driven to move, the protruding block (321) is driven to slide along the track in the guide groove (221), and the positioning part (310) is driven to switch between the expanded state and the contracted state, so as to adapt to the temperature measurement of the heating cavity (13) with different inner diameters. In the contracted state, the telescopic part (300) is contracted radially inward, so that the telescopic part (300) can be inserted into the heating cavity from the opening of the heating cavity (13). In the expanded state, the telescopic part (300) is expanded radially outward, so that at least a part of the outer wall of the telescopic part (300) is close to the inner wall of the heating cavity (13), and the temperature measuring end of the temperature sensor (10) is tightly attached to the inner wall of the heating cavity. 2.The temperature measuring device of the aerosol generating device of claim 1, wherein, The temperature measuring device further comprises a locking part (400), the locking part (400) is matched with the operation part (200), and there are a locked state and an unlocked state; In the locked state, the operation part (200) is locked by the locking part (400), so that the movement of the telescopic part (300) in the radial direction is locked; In the unlocked state, the operation part (200) does not interfere with the locking part (400), and the telescopic part (300) can move in the radial direction. 3.The temperature measuring device of the aerosol generating device according to claim 2, characterized in that, The positioning part (310) is arranged circumferentially at least two, and the total circumferential angle of all the positioning parts (310) is less than 360°. 4.The temperature measuring device of the aerosol generating device according to claim 3, characterized in that, The number of the positioning part (310) is four, the circumferential angle of the positioning part (310) is 90°, and in the contracted state, the positioning part (310) can form a continuous and complete circumference. 5.The temperature measuring device of the aerosol generating device according to any one of claims 1 to 4, characterized in that, The positioning part (310) is provided with a through hole, and the through hole is provided with an opening part (313) at the corresponding position, and the opening part (313) is removably assembled at the through hole. 6.The temperature measuring device of the aerosol generating device according to any one of claims 1 to 4, characterized in that, The positioning part (310) is at least a double-layer structure, and the positioning part (310) comprises an inner wall (311) and an outer wall (312). 7.The temperature measuring device of the aerosol generating device according to any one of claims 1 to 4, characterized in that, The positioning part (310) further comprises a buckle (340). 8.The temperature measuring device of the aerosol generating device according to claim 7, wherein, The temperature measuring device further comprises an extension section (350), the extension section (350) comprises the buckles (340) at both axial ends, the buckles (340) can be aligned and buckled to each other, and the extension section (350) extends along the axial length of the contraction and expansion section (300). 9.The temperature measuring device of the aerosol generating device according to claim 6, wherein, The outer wall (312) is made of a heat-insulating elastic material. 10.The temperature measuring device of the aerosol generating device according to claim 1, wherein, The temperature measuring device further comprises a base section (100), the base section (100) is relatively stationary with the measured heating cavity during temperature measurement, and can support and fix the operation section (200).

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