Flue gas temperature testing device

Abstract

The utility model relates to the technical field of tobacco product testing equipment, and discloses a smoke temperature testing device which comprises a shell, a smoke channel is arranged in the shell, a temperature measuring device is arranged in the smoke channel, the smoke channel is provided with an air inlet and an air extraction opening, the air extraction opening is used for being connected with an air extraction device, and the air inlet is used for being connected with a cigarette; the cigarette support is detachably connected to the air inlet of the smoke channel of the shell in an inserted mode, and the cigarette support is provided with a heating device used for being inserted into a cigarette. When the cigarette holder is used for heating the cigarette and detecting the smoke temperature, the weight of the cigarette holder with the heating device is borne by the shell, and the cigarette in a heating state cannot be pressed. The whole heating and detection process can be stably supported by the insertion structure of the cigarette holder and the shell, and a tester does not need to support the cigarette holder all the time, so that the problem that the detection process is strenuous is effectively solved, and the measurement of the cigarette smoke temperature is more convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco product testing equipment, in particular to a smoke temperature testing device. Background Art

[0002] With growing concerns about health risks, heat-not-burn (HNB) tobacco products are becoming increasingly popular. HNB tobacco products release nicotine and smoke from tobacco through low-temperature baking at around 300°C, significantly lower than the combustion temperature of traditional cigarettes, which exceeds 800°C. Since they produce no open flame when smoked, they are believed to reduce the release of some harmful substances compared to traditional cigarettes, and are gradually gaining market attention. However, HNB tobacco products have faced numerous technical challenges during their development, notably smoke temperature measurement, a key issue.

[0003] In the prior art, a device for detecting the temperature of smoke when heating a cigarette comprises a smoking device and a temperature detection mounting base. When in use, the cigarette is heated by the smoking device, and the smoke temperature is detected by the temperature detection mounting base.

[0004] However, in the existing technical solutions, when in use, the smoking device is only connected to the temperature detection mounting base through the cigarette. Since the cigarette cannot bear the weight of the smoking device, the tester needs to always support the smoking device, making the detection process more laborious. Utility Model Content

[0005] In view of this, the present invention provides a smoke temperature testing device to solve the problem that the cigarette smoke temperature measurement process in the prior art is relatively laborious.

[0006] The utility model provides a smoke temperature testing device, comprising: a shell, with a smoke channel inside, a temperature measuring device arranged in the smoke channel, the smoke channel having an air inlet and an air extraction port, the air extraction port being used to be connected to the air extraction device, and the air inlet being used to be connected to a cigarette; a cigarette holder, detachably plugged into the air inlet of the smoke channel of the shell, the cigarette holder being provided with a heating device for inserting a cigarette.

[0007] Through the above-mentioned arrangement, when heating cigarettes and testing smoke temperature, the weight of the cigarette holder with the heating device is borne by the outer shell, and no pressure is applied to the heated cigarette. The plug-in structure between the cigarette holder and the outer shell can firmly support the entire heating and testing process, eliminating the need for the tester to constantly support the cigarette holder. This effectively solves the problem of the relatively laborious testing process and makes the measurement of cigarette smoke temperature more convenient and efficient. At the same time, the temperature measuring device in the smoke channel can accurately detect the smoke temperature. The connection between the exhaust port and the exhaust device ensures the normal flow of smoke, and the connection between the air inlet and the cigarette ensures that the smoke can smoothly enter the channel for testing.

[0008] Optionally, an inner tube is provided in the outer shell, a heat-insulating gap is provided between the inner tube and the outer shell, and the smoke channel is formed inside the inner tube.

[0009] This arrangement effectively blocks heat conduction and stabilizes the flue gas temperature, facilitating accurate measurement by the temperature measuring device. It also prevents overheating of the outer shell, which could cause burns to the operator and reduce operational inconvenience. Furthermore, the inner tube forms a regular flue gas channel, ensuring stable extraction and making the measurement process smoother and more efficient.

[0010] Optionally, one end of the inner tube extends outward from the outer shell to form an air extraction port, and a barb structure is formed on the outer wall of the air extraction port.

[0011] Through the above-mentioned arrangement, one end of the inner tube extends out of the outer shell to form an exhaust port, and a barb structure is provided on the outer wall of the exhaust port. When connecting the exhaust device, the barb structure can quickly and firmly clamp the connecting tube without the need for additional complicated fixing operations, thereby improving the reliability and overall efficiency of the measurement work.

[0012] Optionally, the temperature measuring device includes a temperature sensing sleeve and a temperature sensor, one end of the temperature sensing sleeve is a closed end, which extends to a position in the flue gas channel close to the air inlet, and the other end of the temperature sensing sleeve has an insertion port, and the temperature sensor is inserted into the temperature sensing sleeve through the insertion port.

[0013] With this arrangement, the temperature sensing sleeve is closed at one end and extends close to the air inlet, enabling immediate contact and sensing of the flue gas temperature as soon as it enters the flue gas duct. The temperature sensor is inserted into the temperature sensing sleeve through an insertion port, making installation and removal easy, facilitating maintenance and replacement of the temperature sensor. This improves measurement efficiency and accuracy while providing accurate temperature data.

[0014] Optionally, the closed end of the temperature sensing sleeve has a hemispherical outer wall with a diameter larger than the average diameter.

[0015] This arrangement increases the hemispherical outer wall of the closed end of the temperature sensing sleeve, increasing its contact area with the flue gas. This allows the flue gas to more fully exchange heat with the temperature sensing sleeve after entering the flue gas passage. This allows the temperature sensor to more quickly and accurately acquire flue gas temperature information, reducing temperature measurement errors caused by insufficient heat exchange.

[0016] Optionally, the cigarette holder has a supporting area for supporting the cigarette, and a temperature sensing device is provided on the supporting area.

[0017] With this setup, when a cigarette is placed in the support area, the temperature sensing device can directly contact the cigarette, monitoring its temperature changes in real time during the heating process. By simultaneously acquiring the cigarette's own temperature information while measuring smoke temperature, the relationship between smoke temperature and the cigarette's combustion status can be more accurately analyzed.

[0018] Optionally, the supporting area is a plane, and a plurality of temperature sensing devices are arranged at intervals along the length direction of the cigarette.

[0019] This arrangement ensures a stable placement of the cigarettes on the flat support area, reducing measurement errors. Multiple temperature sensors are spaced along the length of the cigarettes, enabling a comprehensive understanding of their temperature distribution. This provides a robust basis for analysis, reduces repeated measurements due to insufficient data, reduces workload, eliminates measurement complexity, and improves efficiency and accuracy.

[0020] Optionally, a battery is provided on the housing, and the battery is connected to the heating device.

[0021] With this setup, the battery integrated into the housing is electrically connected to the heating device, enabling convenient power supply. This eliminates the need for complex external power supplies when testing cigarette smoke temperature. Operators can more quickly activate the heating device to generate smoke, improving test preparation efficiency.

[0022] Optionally, the air inlet of the smoke channel has a trumpet-shaped section opening outward.

[0023] This trumpet-shaped section of the ventilation duct improves the device's adaptability to the cigarettes being tested. Both thin and thick cigarettes can be more easily inserted into the air inlet, eliminating the need for frequent replacement or adjustment of air inlet accessories for different cigarette sizes. During actual measurements, operators don't need to spend excessive time and effort precisely aligning the cigarette with the air inlet, greatly improving the convenience of testing operations.

[0024] Optionally, the flue gas channel includes: a straight section, the air inlet is located at the first end of the straight section, the second end of the straight section is provided with a mounting port for the temperature measuring device, and the temperature measuring device extends into the flue gas channel through the mounting port; a bent section, the bent section is connected to the side wall of the end of the straight section away from the air inlet, and the other end of the bent section forms the exhaust port.

[0025] With this setup, the straight sections of the flue gas channel provide a stable path for accurate temperature measurement, while the curved sections redirect the flow, facilitating extraction and leveraging pressure differentials for efficient extraction. This overall structure ensures orderly and controllable flue gas flow, reducing measurement errors and instability, and simplifying operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of a specific implementation of the flue gas temperature testing device provided in an embodiment of the present utility model.

[0028] Description of reference numerals:

[0029] 1. Outer shell; 2. Smoke duct; 3. Air inlet; 4. Exhaust port; 5. Cigarette holder; 6. Heating device; 7. Thermal insulation gap; 8. Barb structure; 9. Temperature sensing sleeve; 10. Temperature sensor; 11. Temperature sensing device; 12. Temperature signal receiving device; 13. Battery. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0031] The following combination Figure 1 , describing the embodiments of the present utility model.

[0032] like Figure 1 As shown, a specific implementation of the smoke temperature testing device provided in this embodiment includes: a shell 1 and a cigarette holder 5.

[0033] Specifically, the shell 1 has a smoke channel 2 inside, and a temperature measuring device is provided in the smoke channel 2. The smoke channel 2 has an air inlet 3 and an air extraction port 4. The air extraction port 4 is used to connect with the air extraction device, and the air inlet 3 is used to connect with the cigarette; the cigarette holder 5 is detachably plugged into the air inlet 3 of the smoke channel 2 of the shell 1, and the cigarette holder 5 has a heating device 6 for inserting cigarettes. The heating device 6 uses a heat-conducting needle that generates heat energy by electricity. After being inserted into the cigarette, it is heated by heating, so that the non-burning cigarette can release aromatic substances.

[0034] In this embodiment, the housing 1 serves as the external support structure for the entire device, and the internal smoke channel 2 provides a stable path for smoke flow. A temperature measuring device measures the temperature of the smoke passing through the smoke channel 2. The air inlet 3 is connected to the cigarette, and the air extraction port 4 is connected to the extraction device. When the extraction device is in operation, it creates a stable airflow within the smoke channel 2, promoting orderly smoke flow and enabling the temperature measuring device to better measure the temperature of the flowing smoke. The removable plug-in connection of the cigarette holder 5 allows it to be easily removed from the air inlet 3 of the smoke channel 2 of the housing 1 when cleaning, replacement, or adjustment is required. The heating device 6 fixed to the cigarette holder 5 utilizes heat-conducting pins that generate heat when powered. The cigarette holder 5, connected to the housing 1, supports the cigarette being tested, eliminating the need for manual support during testing due to pressure on the cigarette. This facilitates the entire testing process and solves the laborious issue of measuring cigarette smoke temperature.

[0035] like Figure 1 As shown, a specific implementation of the flue gas temperature testing device provided in this embodiment is provided. An inner tube is provided in the outer shell 1 , and a heat insulating gap 7 is provided between the inner tube and the outer shell 1 , and the flue gas channel 2 is formed inside the inner tube.

[0036] Specifically, when measuring cigarette smoke temperature, the thermal insulation gap 7 effectively prevents heat from the smoke from transferring to the outer shell 1 as the smoke flows through the smoke channel 2 within the inner tube. This allows the heat from the smoke to be retained within the smoke channel 2 as much as possible, ensuring relatively stable smoke temperature and providing a more accurate measurement environment for the temperature measuring device. Furthermore, because the outer shell 1 does not absorb a large amount of heat from the smoke and overheat, operators do not need to worry about burns from contact with the outer shell 1 during operation, reducing safety concerns during operation and avoiding the inconvenience caused by taking additional anti-scalding measures.

[0037] In addition, in other embodiments, the smoke channel 2 and the exhaust pipe can be made of thickened materials to ensure that the pipe structure is strong and durable, and isolated from the outer shell 1, thereby reducing temperature loss, more accurately measuring the smoke temperature, and avoiding burns when held in hand.

[0038] like Figure 1 As shown, it is a specific implementation of the flue gas temperature testing device provided in this embodiment. One end of the inner tube extends outward from the outer shell 1 to form an air suction port 4, and a barb structure 8 is formed on the outer wall of the air suction port 4.

[0039] Specifically, when connecting the exhaust pipe, the barb structure 8 quickly and securely engages the pipe, ensuring a tight and stable connection. This connection method eliminates the need for complex fixtures or tedious connection procedures, significantly saving operators time and effort in connecting the exhaust device. Compared to traditional connection methods, it effectively eliminates air leaks caused by loose connections and ensures stable and continuous smoke flow during the extraction process.

[0040] In other embodiments, an annular groove can be provided at the connection between the air outlet 4 and the pipe, and a metal or plastic clamp can be used to tightly secure the pipe to the air outlet 4. The clamp typically has a fastening device such as a bolt, and tightening the bolt tightens the clamp, thereby tightly fitting the pipe to the air outlet 4. This method is similar to the pipe clamp used in water pipe connections, which can apply uniform pressure to the pipe and ensure a tight connection.

[0041] like Figure 1 As shown, a specific implementation of the flue gas temperature testing device provided in this embodiment is provided. The temperature measuring device includes a temperature sensing sleeve 9 and a temperature sensor 10. One end of the temperature sensing sleeve 9 is a closed end, which extends to a position in the flue gas channel 2 close to the air inlet 3. The other end of the temperature sensing sleeve 9 has an insertion port, and the temperature sensor 10 is inserted into the temperature sensing sleeve 9 through the insertion port.

[0042] Specifically, the temperature sensor 10 is a professional temperature sensing device with a length of 80-150mm and a measuring range of 0-150℃, and is connected to a temperature signal receiving device 12. The material of the temperature sensing sleeve 9 is selected to have thermal conductivity similar to that of the human oral cavity and can clearly reflect the human body's perception of the smoke temperature, such as silicone material. The thermal conductivity of silicone is generally around 0.2-0.3W / (m·K), which is close to the thermal conductivity of the human oral soft tissue (about 0.3-0.5W / (m·K)). The closed end effectively reduces the possibility of heat loss from this end, so that the inside of the temperature sensing sleeve 9 can more accurately reflect the initial temperature condition of the smoke. The insertion port uses a rubber gasket to provide a convenient channel for the installation of the temperature sensor 10. The entire temperature measuring device can work stably and efficiently during the cigarette smoke temperature test through the cooperation of the temperature sensing sleeve 9 and the temperature sensor 10.

[0043] like Figure 1 As shown, a specific implementation of the flue gas temperature testing device provided in this embodiment is shown, and the closed end of the temperature sensing sleeve 9 has a hemispherical outer wall with a diameter larger than the average diameter.

[0044] Specifically, the hemispherical outer wall of the closed end of the temperature sensing sleeve 9 can increase the contact area with the flue gas, which can perform heat exchange more quickly and fully, so that the temperature sensor 10 can sense temperature changes more accurately and timely, reducing measurement errors.

[0045] In other embodiments, the outer wall of the temperature sensing sleeve 9 can be designed in a spiral or wavy shape to increase the surface area of ​​the outer wall within a limited space, thereby increasing the contact area with the flue gas. When the flue gas passes through, it will flow along these spiral or wavy shapes, thereby increasing the contact points and contact area with the sleeve.

[0046] like Figure 1 As shown, a specific implementation of the smoke temperature testing device provided in this embodiment is provided. The cigarette holder 5 has a supporting area for supporting cigarettes, and a temperature sensing device 11 is provided on the supporting area.

[0047] Specifically, the support area of ​​the cigarette holder 5 further stabilizes the cigarette, preventing measurement errors caused by its shaking. The temperature sensing device 11 in the support area maintains close contact with the cigarette, monitoring temperature changes at each stage of combustion in real time. This provides a more comprehensive understanding of the overall temperature distribution of the cigarette and helps analyze the relationship between smoke and cigarette temperatures, providing a basis for optimizing cigarette performance and improving testing methods, thereby enhancing the scientificity and accuracy of testing.

[0048] like Figure 1 As shown in FIG. 1 , a specific implementation of the smoke temperature testing device provided in this embodiment is provided. The support area is a plane, and a plurality of temperature sensing devices 11 are arranged at intervals along the length direction of the cigarette.

[0049] Specifically, multiple temperature sensing devices 11 are evenly spaced around the contact area between the cigarette and the support area. These devices can measure the cigarette's temperature from different locations. Because the temperature of a cigarette may vary at different locations along its length during combustion, this spacing allows for more comprehensive and detailed capture of temperature information from all parts of the cigarette. Connecting multiple temperature sensing devices 11 to the same temperature signal receiving device 12 completes data collection.

[0050] It should be noted that this embodiment does not limit the number of temperature sensing devices 11, because corresponding temperature sensing devices 11 can be installed at any position in the air inlet 3 and the straight section of the smoke channel 2 according to test requirements to meet the needs of temperature measurement at different positions of the cigarette.

[0051] like Figure 1 As shown, a specific implementation of the flue gas temperature testing device provided in this embodiment is provided. A battery 13 is provided on the housing 1 , and the battery 13 is connected to the heating device 6 .

[0052] Specifically, the provision of battery 13 makes powering the heating device 6 more convenient, eliminating the need for an external power source and reducing the space constraints and operational hassles associated with connecting external power lines. This integrated design makes the entire device more flexible to use, allowing testing to be carried out anytime and anywhere. Furthermore, since battery 13 is directly electrically connected to the heating device 6, it provides a stable power supply, ensuring the continuity and stability of the heating process.

[0053] like Figure 1 As shown, it is a specific implementation of the flue gas temperature testing device provided in this embodiment, and the air inlet 3 of the flue gas channel 2 has a trumpet-shaped section opening outward.

[0054] Specifically, the flared section has an inner diameter of 6-7.5mm, a length of 10-40mm, and an inclination angle of 5°-10° to accommodate tobacco products of varying diameters. Its outward flared shape adapts to cigarettes of varying diameters, improving compatibility and making operation more convenient. Regarding smoke flow, it guides smoke in smoothly and evenly, avoiding adverse conditions, ensuring stable extraction and accurate measurement, and enhancing test reliability.

[0055] In other embodiments, a flexible sealing interface, such as a sealing ring made of an elastic material such as rubber or silicone, may be provided at the air inlet 3. When a cigarette is inserted into the air inlet 3, the elastic sealing ring automatically contracts or expands according to the cigarette's diameter, fitting tightly against the cigarette surface and thus forming a sealed connection. This sealing interface can accommodate cigarettes of varying diameters within a certain range.

[0056] like Figure 1 As shown, a specific implementation of the flue gas temperature testing device provided in this embodiment, the flue gas channel 2 includes: a straight section, the air inlet 3 is located at the first end of the straight section, the second end of the straight section is provided with a mounting port for the temperature measuring device, and the temperature measuring device extends into the flue gas channel 2 through the mounting port; a bent section, the bent section is connected to the side wall of the end of the straight section away from the air inlet 3, and the other end of the bent section forms the exhaust port 4.

[0057] Specifically, the layout of the straight section from the air inlet 3 to the temperature measuring device installation port creates stable conditions for flue gas flow and temperature measurement. After entering the straight section from the air inlet 3, the flue gas can flow toward the temperature measuring device installation port in a relatively stable state, allowing the temperature measuring device to more accurately obtain the flue gas temperature and reducing measurement errors caused by turbulent flue gas flow. The connection between the curved section and the sidewall of the straight section changes the direction of the flue gas flow, allowing the flue gas to smoothly turn and enter the curved section after passing through the straight section. Positioning the exhaust port 4 at the other end of the curved section fully utilizes the pressure difference generated by the curved structure, more effectively extracting the flue gas and improving measurement efficiency and accuracy.

[0058] Working principle:

[0059] This flue gas temperature testing device consists of a housing and a cigarette holder. The housing contains a flue gas passageway with a temperature measuring device, an air inlet, and an exhaust port. The exhaust port is connected to the exhaust device, and the air inlet is connected to the cigarette. The cigarette holder is removable and plugs into the air inlet. Its heating device is a heat-conducting needle that generates heat when powered. It is inserted into a non-burning cigarette to heat it and release smoke. During operation, the heating device heats the cigarette to produce smoke, which enters the flue gas passageway through the air inlet. The exhaust device ensures a stable flow of smoke within the passageway, and the temperature measuring device measures the temperature of the flowing smoke. The cigarette holder bears the weight of the heating device, eliminating manual support and ensuring convenient and accurate testing.

[0060] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope of the present invention.

Claims

1. A flue gas temperature testing device, characterized in that: include: A housing (1) having a smoke passage (2) therein, wherein a temperature measuring device is provided in the smoke passage (2), the smoke passage (2) having an air inlet (3) and an air extraction port (4), the air extraction port (4) being used to connect to the air extraction device, and the air inlet (3) being used to connect to the cigarette; The cigarette holder (5) is detachably plugged and connected to the air inlet (3) of the smoke passage (2) of the housing (1), and the cigarette holder (5) is provided with a heating device (6) for inserting cigarettes.

2. The flue gas temperature testing device according to claim 1, characterized in that: An inner tube is provided in the outer shell (1), a heat-insulating gap (7) is provided between the inner tube and the outer shell (1), and the smoke channel (2) is formed inside the inner tube.

3. The flue gas temperature testing device according to claim 2, characterized in that: One end of the inner tube extends outward from the outer shell (1) to form an air extraction port (4), and a barb structure (8) is formed on the outer wall of the air extraction port (4).

4. The flue gas temperature testing device according to claim 1, characterized in that: The temperature measuring device comprises a temperature sensing sleeve (9) and a temperature sensor (10), one end of the temperature sensing sleeve (9) is a closed end, and the closed end extends to a position in the flue gas channel (2) close to the air inlet (3), and the other end of the temperature sensing sleeve (9) has an insertion port, and the temperature sensor (10) is inserted into the temperature sensing sleeve (9) through the insertion port.

5. The flue gas temperature testing device according to claim 4, characterized in that: The closed end of the temperature sensing sleeve (9) has a hemispherical outer wall with a diameter larger than the average diameter.

6. The flue gas temperature testing device according to claim 1, characterized in that: The cigarette holder (5) has a supporting area for supporting cigarettes, and a temperature sensing device (11) is provided on the supporting area.

7. The flue gas temperature testing device according to claim 6, characterized in that: The supporting area is a plane, and a plurality of temperature sensing devices (11) are arranged at intervals along the length direction of the cigarette.

8. The flue gas temperature testing device according to any one of claims 1 to 7, characterized in that: A battery (13) is provided on the housing (1), and the battery (13) is connected to the heating device (6).

9. The flue gas temperature testing device according to any one of claims 1 to 7, characterized in that: The air inlet (3) of the flue gas channel (2) has a trumpet-shaped section opening outward.

10. The flue gas temperature testing device according to any one of claims 1 to 7, characterized in that: The smoke channel (2) comprises a straight section, the air inlet (3) is located at a first end of the straight section, a second end of the straight section is provided with a mounting opening for the temperature measuring device, and the temperature measuring device extends into the smoke channel (2) through the mounting opening; A bending section is connected to a side wall of the straight section at one end away from the air inlet (3), and the other end of the bending section forms the air extraction port (4).

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