A kind of heating not burning smoking set semi-finished product heating body inner wall temperature testing mechanism
Patent Information
- Application Number
- CN202522371149.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-07
AI Technical Summary
1.无法实现内壁精确测温:传统外壁或红外测温方式无法获得发热体内壁的真实温度分布;而人工插入式热电偶由于探头结构固定、导向精度低,难以确保与内壁紧密贴合,导致测试误差较大
1.实现内壁多点同步精确测温
Smart Images

Figure CN224921316U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temperature measuring equipment technology, specifically to a temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoke device. Background Technology
[0002] Heated tobacco products (HNBs) are electronic cigarette devices that release the active ingredients in tobacco or tobacco substitutes through heating. Their core heating element typically uses a metal-ceramic composite structure or a resistance wire winding structure. It heats the external tobacco stick to a set temperature by applying electricity, thereby achieving the effect of heating without burning. The heating performance of the heating element directly affects the stability of the device and the user experience. Therefore, it is necessary to accurately measure and evaluate the temperature distribution characteristics of the heating element during the research and development and production process.
[0003] Shortcomings of existing technology: 1. Inability to achieve accurate temperature measurement of the inner wall: Traditional external wall or infrared temperature measurement methods cannot obtain the true temperature distribution of the inner wall of the heating element; while manual insertion thermocouples, due to their fixed probe structure and low guiding accuracy, cannot ensure a tight fit with the inner wall, resulting in large test errors.
[0004] 2. Lack of automatic guidance and positioning structure: Most existing internal wall temperature measuring devices rely on manual adjustment of the probe insertion angle and depth, which is cumbersome and has poor repeatability, especially in small-sized heating elements where misalignment or scratches are more likely to occur. The lack of an automatic alignment and leveling mechanism results in low probe insertion coaxiality and poor measurement consistency.
[0005] 3. Thermocouple claw structure is simple and cannot achieve multi-point synchronous measurement: Most test devices only have a single temperature measuring point, which cannot simultaneously measure the temperature changes of the upper and lower sections or multiple areas of the heating element, making it difficult to reflect the overall temperature distribution characteristics and uniformity indicators.
[0006] 4. Low cooling and reset efficiency, affecting test cycle time: Existing temperature probes require natural cooling after each test, which is time-consuming and affects batch testing efficiency. There is a lack of effective rapid cooling or air-blowing cooling methods.
[0007] Therefore, existing technologies have shortcomings and need further improvement. Utility Model Content
[0008] To address the problems existing in the prior art, this utility model provides a temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoke device.
[0009] To achieve the above objectives, the specific solution of this utility model is as follows: This utility model provides a temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoke device, comprising: The product positioning fixture is set on a fixed base, and the product positioning fixture is equipped with a Type-C data plug module for docking with the electrical interface of the heating element of the semi-finished product under test; A lifting assembly is mounted on the fixed base; The lifting assembly drives the downward pressing cylinder assembly, the temperature measuring claw thermocouple assembly, and the elastic guide assembly. The elastic guide component is used to contact and guide the heated body under test when the lifting component moves downward. The thermocouple component of the temperature measuring claw can switch between the retracted and extended states under the drive of the pressing cylinder component, so that the thermocouple temperature sensor arranged on the outer arc surface of the thermocouple temperature measuring claw can be in close contact with the inner wall of the heated body under test for temperature measurement. And an air blowing pipe is provided aligned with the thermocouple assembly of the temperature measuring claw for cooling it after testing.
[0010] Furthermore, the temperature measuring claw thermocouple assembly includes a temperature measuring claw base, a temperature measuring claw cover plate, a temperature measuring claw body, and a thermocouple temperature measuring claw assembled in sequence. The thermocouple temperature sensor is fixed to two arc-shaped temperature measuring points spaced apart along the axial direction of the thermocouple temperature measuring claw by high-temperature tape, so as to realize synchronous contact temperature measurement of the upper and lower sections of the heated body.
[0011] Furthermore, the temperature measuring claw body and the thermocouple temperature measuring claw are connected by a rotating pin and a spring hinge. When the pressing cylinder assembly extends, the two swing slightly inward under the action of the spring to form a V-shaped closing state that facilitates insertion into the inner hole of the heating element. When the pressing cylinder assembly retracts, the two are stretched open to a vertical state of about 90° to achieve stable contact with the inner wall.
[0012] Furthermore, the elastic guide component includes an elastic guide component spring. The elastic guide component is arranged to contact the top of the heated object before the thermocouple component of the temperature measuring claw during the downward movement of the lifting component. It guides and levels the heated object through elastic force to improve the coaxiality and stability of the thermocouple temperature measuring claw when it enters the inner hole.
[0013] Furthermore, the lifting assembly, the pressing cylinder assembly, the temperature measuring claw thermocouple assembly, and the elastic guide assembly are connected as an integrated follow-up structure, so that when the lifting assembly descends, the three components descend synchronously, and when the lifting assembly rises, the three components rise synchronously.
[0014] Furthermore, the air blowing pipe is positioned opposite to and aligned with the opening area of the temperature measuring claw thermocouple assembly, so as to deliver cooling airflow to the temperature measuring claw and thermocouple area after the test, thereby achieving rapid heat dissipation and shortening the test cycle.
[0015] Furthermore, the product positioning fixture is provided with positioning holes or positioning grooves that limit the shape and axial position of the heating element, and the Type-C data plug module is fixed in a predetermined position in the positioning holes or positioning grooves to achieve reliable docking and power-on start-up after the heating element under test is placed.
[0016] Furthermore, the thermocouple temperature measuring claw is made of stainless steel, and its outer arc surface serves as the contact surface that fits against the inner wall of the heating element being measured; the high-temperature tape used to fix the thermocouple temperature sensor has a temperature resistance of not less than 400℃ to adapt to the high-temperature measurement environment of the inner wall of the heating element.
[0017] Furthermore, the axial spacing between the two arc-shaped temperature measuring points is set to match the spacing required for temperature analysis of the upper and lower sections of the heated body, thereby forming at least four temperature acquisition channels to evaluate the temperature uniformity of the inner wall.
[0018] Furthermore, the thermocouple temperature measuring claw has an outer diameter of 6.8 mm when it is open, so as to fit the inner cavity of the heating element with an inner diameter of 6 to 7 mm; when it is closed, the maximum outer diameter of the thermocouple temperature measuring claw is smaller than the minimum inner diameter of the inner cavity, so as to ensure smooth insertion.
[0019] The technical solution of this utility model has the following beneficial effects: 1. Achieve simultaneous and accurate temperature measurement at multiple points on the inner wall. By setting two arc-shaped temperature measuring points along the axial direction on the outer arc surface of the temperature measuring claw thermocouple assembly, and arranging thermocouple temperature sensors on each point, simultaneous contact-type synchronous temperature measurement can be performed on both the upper and lower sections of the heated element, forming at least four temperature acquisition channels. This design not only accurately reflects the temperature distribution and uniformity of the inner wall, but also provides reliable data support for optimizing the heating element structure.
[0020] 2. Equipped with an adaptive retraction and expansion mechanism, ensuring smooth insertion and a stable fit. The temperature measuring claw body and the thermocouple temperature measuring claw are connected by a rotating pin and a spring hinge. Driven by a downward cylinder, it can switch between a V-shaped retracted state and a 90° open state. When inserted into the inner hole of the heating element, it automatically retracts to avoid scratching. During temperature measurement, it automatically opens and is kept in stable contact with the inner wall by spring force, significantly improving the reliability and repeatability of temperature measurement.
[0021] 3. Install a flexible guide component to improve insertion coaxiality and positioning accuracy. The elastic guide component contacts the heating element being tested first when the lifting component descends. It automatically guides and levels the heating element through the spring force, ensuring good coaxiality and perpendicularity when the thermocouple measuring claw enters the inner hole. This effectively avoids skewed insertion and the resulting temperature measurement error, thus improving the stability of the test results.
[0022] 4. Adopts an integrated follow-up lifting structure, ensuring synchronized movement and easy control. The lifting assembly, the pressing cylinder assembly, the temperature measuring claw thermocouple assembly, and the elastic guide assembly are connected as an integrated follow-up structure. The three maintain synchronous movement during the lifting process, realizing the continuous action of "completion of alignment, insertion, and temperature measurement in one downward movement". The structure is compact and the control logic is simple, which greatly improves the testing efficiency.
[0023] 5. Features rapid air cooling function, significantly shortening the testing cycle. The air blowing pipe is positioned to align with the temperature measuring claw and thermocouple assembly. After the test is completed, it can automatically deliver cooling airflow to the temperature measuring claw and thermocouple area, achieving rapid heat dissipation and reset. This avoids excessive waiting time due to high temperature residue, effectively improving the batch testing cycle and equipment utilization rate.
[0024] 6. Achieve precise positioning and reliable power-on of the tested heating element. The product positioning fixture is equipped with limiting holes or positioning slots, and the Type-C data plug module is fixed in the predetermined position. After the heating element under test is placed, precise mechanical positioning and electrical connection can be achieved, ensuring stable and reliable power-on testing, while preventing damage to the heating element port due to plugging errors.
[0025] 7. High consistency of temperature measurement data, supporting the assessment of temperature field uniformity. Due to its multi-point design and high coaxial insertion characteristics, the measured temperature data has good stability and high repeatability, enabling the evaluation of temperature difference and uniformity at different axial positions of the heating element, and providing a scientific basis for verifying the thermal characteristics of heated non-combustible smoke devices. Attached Figure Description
[0026] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 ; Figure 2 This is a three-dimensional representation of the present invention. Figure 2 ; Figure 3 This is a perspective view of the temperature measuring claw thermocouple assembly of this utility model; Attached image captions: 1. Fixed base; 2. Product positioning fixture; 3. Lifting assembly; 4. Pressing cylinder assembly; 5. Temperature measuring claw thermocouple assembly; 6. Elastic guide assembly; 7. Temperature measuring claw base; 8. Temperature measuring claw cover plate; 9. Temperature measuring claw body; 10. Thermocouple temperature measuring claw; 11. Air blowing pipe; 12. Elastic guide assembly spring; 13. Type-C data plug module; 14. Thermocouple temperature sensor. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, the terms "upper," "lower," "front," "rear," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0031] Combination Figures 1-3 As shown, this utility model provides a temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoke device, comprising: The product positioning fixture 2 is set on the fixed base 1, and the product positioning fixture 2 is provided with a Type-C data plug module 13 for docking with the electrical interface of the heating element of the semi-finished product under test; The lifting assembly 3 is mounted on the fixed base 1; The lifting assembly 3 drives the pressing cylinder assembly 4, the temperature measuring claw thermocouple assembly 5, and the elastic guide assembly 6. The elastic guide component 6 is used to contact and guide the heated body under test when the lifting component 3 moves downward. The thermocouple component 5 of the temperature measuring claw can switch between the two states of retraction and expansion under the drive of the pressing cylinder component 4, so that the thermocouple temperature sensor 14 arranged on the outer arc surface of the thermocouple temperature measuring claw 10 is in close contact with the inner wall of the heated body under test for temperature measurement. And an air blowing pipe 11 is provided aligned with the temperature measuring claw thermocouple assembly 5 for cooling it after testing.
[0032] The thermocouple assembly 5 includes a temperature measuring claw base 7, a temperature measuring claw cover plate 8, a temperature measuring claw body 9, and a thermocouple temperature measuring claw 10, which are assembled in sequence. The thermocouple temperature sensor 14 is fixed to two arc-shaped temperature measuring points on the thermocouple temperature measuring claw 10 at intervals along the axial direction by high-temperature tape, so as to realize synchronous contact temperature measurement of the upper and lower sections of the heated body.
[0033] The temperature measuring claw body 9 and the thermocouple temperature measuring claw 10 are connected by a rotating pin and a spring hinge. When the pressing cylinder assembly 4 extends, the two swing slightly inward under the action of the spring to form a V-shaped closing state that facilitates insertion into the inner hole of the heating element. When the pressing cylinder assembly 4 retracts, the two are stretched open to a vertical state of about 90° to achieve stable contact with the inner wall.
[0034] The elastic guide component 6 includes an elastic guide component spring 12. The elastic guide component 6 is arranged to contact the top of the heated body before the temperature measuring claw thermocouple component 5 during the downward movement of the lifting component 3. The elastic force guides and levels the heated body to improve the coaxiality and stability of the thermocouple temperature measuring claw 10 when it enters the inner hole.
[0035] The lifting assembly 3 is connected to the pressing cylinder assembly 4, the temperature measuring claw thermocouple assembly 5, and the elastic guide assembly 6 as an integrated follow-up structure, so that when the lifting assembly 3 descends, the three components descend synchronously, and when the lifting assembly 3 ascends, the three components ascend synchronously.
[0036] The air blowing pipe 11 is positioned opposite to and aligned with the opening area of the temperature measuring claw thermocouple assembly 5, so as to deliver cooling airflow to the temperature measuring claw and thermocouple area after the test, thereby achieving rapid heat dissipation and shortening the test cycle.
[0037] The product positioning fixture 2 is provided with positioning holes or positioning grooves to limit the shape and axial position of the heating element. The Type-C data plug module 13 is fixed in a predetermined position in the positioning hole or positioning groove so as to achieve reliable docking and power-on start-up after the heating element under test is placed.
[0038] The thermocouple temperature measuring claw 10 is made of stainless steel, and its outer arc surface serves as the contact surface that fits against the inner wall of the heating element being measured. The high-temperature tape used to fix the thermocouple temperature measuring sensor 14 has a temperature resistance of not less than 400℃ to adapt to the high-temperature measurement environment of the inner wall of the heating element.
[0039] The axial spacing between the two arc-shaped temperature measuring points is set to match the spacing required for temperature analysis of the upper and lower sections of the heated body, thereby forming at least four temperature acquisition channels to evaluate the temperature uniformity of the inner wall.
[0040] The thermocouple temperature measuring claw 10 has an outer diameter of 6.8 mm when it is open, so as to fit the inner cavity of the heating element with an inner diameter of 6 to 7 mm; when it is closed, the maximum outer diameter of the thermocouple temperature measuring claw 10 is smaller than the minimum inner diameter of the inner cavity, so as to ensure smooth insertion.
[0041] Working principle This utility model discloses a temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoke device. It is mainly used for multi-point contact temperature testing of the inner wall of the heating element of the semi-finished heated non-combustible smoke device. Through mechanical guidance, automatic clamping and synchronous thermocouple acquisition, it achieves accurate detection and rapid reset of the inner cavity temperature.
[0042] I. Overall Work Process Before testing, the operator inserts the semi-finished heating element to be tested into the product positioning fixture 2 on the fixed base 1. The product positioning fixture 2 is equipped with limiting holes or positioning grooves, the shape of which matches the shape and axial position of the heating element to ensure that the heating element is accurately positioned. The Type-C data plug module 13 inside the fixture automatically connects to the electrical interface of the heating element to achieve reliable power-on, so as to drive the heating element to heat up during the test.
[0043] Once the test is initiated, the control system drives the lifting assembly 3 downwards. As the power input mechanism for the entire machine, the lifting assembly 3, together with the pressing cylinder assembly 4, the temperature measuring claw thermocouple assembly 5, and the elastic guide assembly 6, forms an integrated follow-up structure, which can maintain the synchronous movement of the three during the motion.
[0044] II. Guidance and Positioning Stage As the lifting assembly 3 descends, the elastic guide assembly 6 first contacts the top of the heating element being measured. This assembly contains an elastic guide spring 12, which automatically guides and levels the heating element through its elastic force, ensuring the upper end of the heating element remains vertical and correcting for eccentricity errors. This process effectively ensures the coaxiality of the subsequent thermocouple sensing claw 10 when it enters the inner cavity, improving insertion stability and positioning accuracy.
[0045] III. Probe Insertion and Fitting Temperature Measurement Stage As the lifting assembly 3 continues to descend, the pressing cylinder assembly 4 drives the temperature measuring claw thermocouple assembly 5 to move downward and insert into the inner cavity of the heating element.
[0046] The thermocouple assembly 5 is composed of a temperature-sensing claw base 7, a temperature-sensing claw cover plate 8, a temperature-sensing claw body 9, and a thermocouple temperature-sensing claw 10, which are assembled sequentially. The thermocouple temperature-sensing claw 10 and the temperature-sensing claw body 9 are connected by a rotating pin and a spring hinge.
[0047] When the pressing cylinder assembly 4 extends, the spring causes the two thermocouple temperature measuring claws 10 to automatically swing inward to form a V-shaped closing state, which facilitates smooth insertion into the inner cavity of the heating element with an inner diameter of 6-7 mm. When the pressing cylinder assembly 4 retracts, the hinge mechanism is stretched to a vertical state of about 90° under the action of the cylinder thrust, so that the outer arc surface of the two thermocouple temperature measuring claws 10 is stably attached to the inner wall of the heating element.
[0048] Two arc-shaped temperature measuring points are axially spaced on the outer arc surface of the temperature measuring claw, each with a thermocouple temperature sensor 14 wound around it for simultaneously detecting the temperature of the upper and lower sections of the heating element. A multi-channel data acquisition system can record the temperature change curve in real time, thereby evaluating the heating response speed, temperature uniformity, and stability of the heating element.
[0049] IV. Data Collection and Analysis Phase Once the thermocouple sensing claw 10 is fully in contact with the inner wall of the heating element, the heating element is powered on and heated via the Type-C data connector module 13. Thermocouple temperature sensors 14 at each temperature measuring point transmit temperature signals to the temperature acquisition module, which then processes the data to generate temperature distribution curves and numerical analysis results.
[0050] Because the thermocouple measuring points are distributed vertically and in close contact with the inner wall, they can simultaneously reflect the actual temperature at different heights of the heating element, thereby enabling multi-point synchronous monitoring of the internal temperature field of the heating element.
[0051] V. Cooling and Reset Stage After the temperature test is completed, the system controls the downward cylinder assembly 4 to extend, so that the temperature measuring claw body 9 and the thermocouple temperature measuring claw 10 are back in the V-shaped retracted state and detached from the inner wall. Then the lifting assembly 3 rises as a whole, so that the probe exits the inner cavity of the heating body.
[0052] At the same time, the air blowing pipe 11 located in the opening area of the thermocouple assembly 5 of the temperature measuring claw is automatically activated, spraying cooling airflow into the outer arc surface area of the thermocouple and the temperature measuring claw to achieve rapid heat dissipation and cooling, thereby significantly shortening the waiting time between continuous tests and improving detection efficiency.
[0053] VI. System Reset and Next Round of Testing After cooling, the temperature measuring claw 10, guide assembly 6, and lifting assembly 3 all return to their initial positions, and the system enters standby mode, ready to proceed directly to the next round of heating element insertion and temperature detection. The entire testing process achieves automatic alignment, automatic insertion, automatic fitting, automatic temperature measurement, and automatic cooling, exhibiting a high level of automation and repeatability.
[0054] In summary, this utility model, through the coordinated operation of the mechanical guiding structure and the pneumatic clamping mechanism, achieves high-precision, multi-point synchronous detection of the inner wall temperature of the heating element in a heated non-combustible smoke device. It features simple operation, stable measurement, rapid reset, and reliable structure, significantly improving the detection efficiency and temperature measurement accuracy of the heated non-combustible smoke device.
[0055] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.
Claims
1. A temperature testing mechanism for the inner wall of the heating element of a semi-finished heated non-combustible smoking device, characterized in that, include: The product positioning fixture is set on a fixed base, and the product positioning fixture is equipped with a Type-C data plug module for docking with the electrical interface of the heating element of the semi-finished product under test; A lifting assembly is mounted on the fixed base; The lifting assembly drives the downward pressing cylinder assembly, the temperature measuring claw thermocouple assembly, and the elastic guide assembly. The elastic guide component is used to contact and guide the heated body under test when the lifting component moves downward. The thermocouple component of the temperature measuring claw can switch between the retracted and extended states under the drive of the pressing cylinder component, so that the thermocouple temperature sensor arranged on the outer arc surface of the thermocouple temperature measuring claw can be in close contact with the inner wall of the heated body under test for temperature measurement. And an air blowing pipe is provided aligned with the thermocouple assembly of the temperature measuring claw for cooling it after testing.
2. The testing mechanism according to claim 1, characterized in that, The thermocouple assembly includes a temperature measuring claw base, a temperature measuring claw cover plate, a temperature measuring claw body, and a thermocouple temperature measuring claw assembled in sequence. The thermocouple temperature sensor is fixed to two arc-shaped temperature measuring points spaced apart along the axial direction of the thermocouple temperature measuring claw by high-temperature tape, so as to realize synchronous contact temperature measurement of the upper and lower sections of the heated body.
3. The testing mechanism according to claim 2, characterized in that, The temperature measuring claw body and the thermocouple temperature measuring claw are connected by a rotating pin and a spring hinge. When the pressing cylinder assembly extends, the two swing slightly inward under the action of the spring to form a V-shaped closing state that facilitates insertion into the inner hole of the heating element. When the pressing cylinder assembly retracts, the two are stretched open to a vertical state of about 90° to achieve stable contact with the inner wall.
4. The testing mechanism according to claim 1, characterized in that, The elastic guide component includes an elastic guide spring. The elastic guide component is arranged to contact the top of the heated body before the thermocouple component of the temperature measuring claw during the downward movement of the lifting component. It guides and levels the heated body through elastic force to improve the coaxiality and stability of the thermocouple temperature measuring claw when it enters the inner hole.
5. The testing mechanism according to claim 1, characterized in that, The lifting assembly, the pressing cylinder assembly, the temperature measuring claw thermocouple assembly, and the elastic guide assembly are connected as an integrated follow-up structure, so that when the lifting assembly descends, the three components descend synchronously, and when the lifting assembly rises, the three components rise synchronously.
6. The testing mechanism according to claim 1, characterized in that, The air blowing pipe is positioned opposite to and aligned with the opening area of the temperature measuring claw thermocouple assembly, so as to deliver cooling airflow to the temperature measuring claw and thermocouple area after the test, thereby achieving rapid heat dissipation and shortening the test cycle.
7. The testing mechanism according to claim 1, characterized in that, The product positioning fixture is provided with positioning holes or positioning grooves to limit the shape and axial position of the heating element. The Type-C data plug module is fixed in a predetermined position in the positioning holes or positioning grooves to achieve reliable docking and power-on start-up after the heating element under test is placed.
8. The testing mechanism according to claim 2, characterized in that, The thermocouple temperature measuring claw is made of stainless steel, and its outer arc surface serves as the contact surface that fits against the inner wall of the heating element being measured. The high-temperature tape used to fix the thermocouple temperature sensor has a temperature resistance of not less than 400℃ to adapt to the high-temperature measurement environment of the inner wall of the heating element.
9. The testing mechanism according to claim 2, characterized in that, The axial spacing between the two arc-shaped temperature measuring points is set to match the spacing required for temperature analysis of the upper and lower sections of the heated body, thereby forming at least four temperature acquisition channels to evaluate the temperature uniformity of the inner wall.
10. The testing mechanism according to claim 3, characterized in that, The thermocouple sensing claw has an outer diameter of 6.8 mm when it is open, so as to fit the inner cavity of the heating element with an inner diameter of 6 to 7 mm; when it is closed, the maximum outer diameter of the thermocouple sensing claw is smaller than the minimum inner diameter of the inner cavity to ensure smooth insertion.
