阅读说明：本技术 一种加热器件的多点差值测温装置及检测方法 (Multipoint difference temperature measuring device and method for heating device ) 是由 王汝� 汤建国 郑绪东 李志强 王程娅 雷萍 韩敬美 尚善斋 孙玲 袁大林 吕茜 于 2020-04-24 设计创作，主要内容包括：本发明公开了一种加热不燃烧型卷烟加热器件的多点测温装置,包括如下部件：测温热电偶(5),夹具(6)、转换开关(7)、开关(8)和测温处理系统(9)；所述测温热电偶(5)通过所述转换开关(7)和开关(8)与所述测温处理系统(9)电连接,所述测温热电偶(5)上有多个测温点(2、3、4)。本发明还公开了所述多点测温装置的测温方法。(The invention discloses a multipoint temperature measuring device for heating a non-combustion type cigarette heating device, which comprises the following components: a temperature thermocouple (5), a clamp (6), a change-over switch (7), a switch (8) and a temperature measurement processing system (9); the temperature thermocouple (5) is electrically connected with the temperature measurement processing system (9) through the change-over switch (7) and the switch (8), and a plurality of temperature measurement points (2, 3 and 4) are arranged on the temperature thermocouple (5). The invention also discloses a temperature measuring method of the multipoint temperature measuring device.)

1. The utility model provides a multi-point temperature measuring device of heating non-burning type cigarette heating device which characterized in that includes following part: a temperature thermocouple (5), a clamp (6), a change-over switch (7), a switch (8) and a temperature measurement processing system (9); the temperature thermocouple (5) is electrically connected with the temperature measurement processing system (9) through the change-over switch (7) and the switch (8), and a plurality of temperature measurement points (2, 3 and 4) are arranged on the temperature thermocouple (5).

2. The multipoint thermometric device according to claim 1, wherein said thermometric thermocouples (5) are printed single-ended collinear multiple thermocouples.

3. Multipoint temperature measuring device according to claim 1, characterized in that the thermo thermocouple (5) is clamped by the clamp (6).

4. Multipoint thermometric apparatus according to claim 1, wherein the changeover switch (7) and the switch (8) are mechanical switches or electronic switches.

5. The multipoint temperature measuring device according to claim 1, wherein the temperature measuring processing system (9) is a P L C or an upper computer.

6. A temperature measuring method using the multipoint temperature measuring device for heating a non-combustible cigarette heating element according to claims 1 to 4, characterized by comprising the steps of:

① the heating device (1) of the non-burning cigarette to be tested and the temperature thermocouple (5) are clamped by a clamp (6), so that the heating device (1) is tightly jointed with the temperature thermocouple (5);

② the temperature measurement processing system (9) controls the switch (8) and the change-over switch (7) to switch different temperature test points (2, 3, 4) to carry out multi-point temperature measurement on the heating device (1);

③ the temperature measurement processing system (9) collects, calculates, records and displays the measured temperature value, and the multipoint temperature value of the heating device (1) is obtained.

7. The method of claim 6, wherein the method is a differential method.

Technical Field

The invention relates to a multipoint temperature measuring device and a multipoint temperature measuring method for a heating device for heating a non-combustion type cigarette, and belongs to the technical field of detection.

Technical Field

The heating device is an important part for heating the non-combustion type cigarette smoking set, the heating device is manufactured by a ceramic printing process, and the initial resistance of each batch of heating device is not completely the same, so that the heating device has different temperatures under the same heating condition such as the same current and voltage, the errors of different batches of heating devices are large, and the temperature control requirements of the subsequent large-scale smoking set production cannot be well met. In addition, the heating device also has a distribution of temperature gradients during heat generation. Since the heating device reflects the characteristics of the heating device through the uniformity and consistency of the heating, the uniformity and consistency of the heating device can be detected by measuring the temperature of multiple points of the heating device. However, at present, no related device is available at home and abroad for testing whether the whole heating device has uniformity and consistency; therefore, it is necessary to develop a multipoint temperature measuring device for heating the non-combustion type cigarette heating device, which is used for testing whether the non-combustion type cigarette heating device has uniformity and consistency so as to improve the quality and consistency of batch production of the non-combustion type cigarette heating device.

Disclosure of Invention

In order to solve the problems, the invention provides a multipoint temperature measuring device for heating a non-combustion type cigarette heating device, which is a device for testing the temperature of the non-combustion type cigarette heating device and further testing the uniformity of the non-combustion type cigarette heating device

The technical scheme adopted by the invention is as follows:

the invention discloses a multipoint temperature measuring device for heating a non-combustion type cigarette heating device, which comprises the following components: a temperature thermocouple 5, a clamp 6, a change-over switch 7, a switch 8 and a temperature measurement processing system 9; the temperature thermocouple 5 is electrically connected with the temperature measurement processing system 9 through the change-over switch 7 and the switch 8, and the temperature thermocouple 5 is provided with a plurality of temperature measurement points 2, 3 and 4.

Preferably, the temperature thermocouples 5 are printed single-ended collinear multiple thermocouples.

Preferably, the thermo-thermocouple 5 is held by the holder 6.

Preferably, the change-over switch 7 and the switch 8 are mechanical switches or electronic switches;

preferably, the temperature measurement processing system 9 is a P L C or an upper computer.

The second aspect of the invention discloses a temperature measuring method of the multipoint temperature measuring device for heating the non-combustion type cigarette heating device, which comprises the following steps:

① clamping the heating device 1 of the non-combustion cigarette to be tested and the temperature thermocouple 5 by a clamp 6, so that the heating device 1 is tightly jointed with the temperature thermocouple 5;

②, the temperature measurement processing system 9 controls the switch 8 and the change-over switch 7 to switch different temperature test points 2, 3 and 4 to carry out multi-point temperature measurement on the heating device sample 1;

③ the temperature measurement processing system 9 collects, calculates, records and displays the measured temperature value, and the multipoint temperature value of the heating device 1 is obtained.

Preferably, the temperature measuring method is a differential method.

The switch part of the invention comprises a change-over switch 7 and a switch 8, and the switch part can be a mechanical switch or an electronic switch for ensuring that the contact potential can be eliminated and the temperature of the node is the same, and the principle is shown in figure 1, and the arrow indicates the flow direction of electromotive force e.

E_AB(T,T₀)+e-e＝E_AB(T,T₀) (1)

The change-over switch 7 is a scanning switch, has the advantages of rapid and quick switching time for switching between temperature measuring points of different thermocouples, and can also realize computer program control and automatic measurement.

The temperature measurement processing system 9 of the present invention includes, but is not limited to, a P L C (Programmable L g controller, P L C for short), an upper computer, and the like.

The invention adopts a measuring mode of a printing type single-end collinear multi-thermocouple, for example, as shown in figure 2, positive electrodes of three thermocouples are all made of the same material A, negative electrodes are made of the same material B, and three temperature measuring points are respectively T_A0、T_A1、T_A2. The measuring method adopts a differential method, and assumes that a temperature measuring point is taken as T_A1The branch thermocouple is standard, the differential method is shown as formula 4, and the delta T can be obtained by checking a potential temperature distribution table.

ΔE_AB＝E_ABT_A1，T_n-E_ABT_A0，T_n＝E_ABT_A1，T₀-E_ABT_A0，

T₀＝E_AB(T_A1-T_A0，0)＝E_AB(ΔT,0) (4)

The expressions (2) to (4) show that both the intermediate temperature and the node potential can be eliminated, and the temperature is only related to the potential difference between two points, so that the temperature measurement precision is improved.

The invention has the beneficial effects that:

1. according to the multipoint temperature measuring device for the heating non-combustion type cigarette heating device, error factors such as node contact potential of the printed single-end collinear multiple thermocouples and potential difference generated by cables along with temperature change and resistance change are reduced or eliminated as much as possible by adopting a differential method, and meanwhile, the nodes are close to each other and can be regarded as the same temperature, so that the measuring result of the heating device is not influenced, the temperature measuring precision is improved, and the reliability of data is improved. In addition, the precision requirement of the secondary instrument is reduced.

2. The invention adopts a multi-point temperature measurement mode, realizes the detection of the uniformity and consistency of the heating device of the heating non-combustion type cigarette, and provides an important basis for the development of the heating non-combustion type cigarette smoking set product.

Drawings

FIG. 1 is a schematic diagram of the temperature measurement of the present invention.

FIG. 2 is a single-ended collinear multiple thermocouple of the present invention.

Fig. 3 is a schematic view of the overall structure of the present invention.

The figures are labeled as: 1. a heating device; 2-4, measuring temperature points by thermocouples; 5. a temperature thermocouple; 6. a clamp; 7. a transfer switch; 8. a switch; 9. temperature measurement processing system.

Detailed Description

The invention will be further described with reference to the drawings and the detailed description, but the scope of the invention is not limited thereto.

As shown in fig. 3, a multipoint temperature measuring device for heating a non-combustion type cigarette heating device comprises the following components: a temperature thermocouple 5, a clamp 6, a change-over switch 7, a switch 8 and a temperature measurement processing system 9; the temperature thermocouple 5 is electrically connected with the temperature measurement processing system 9 through the change-over switch 7 and the switch 8, and three temperature measurement points 2, 3 and 4 are arranged on the temperature thermocouple 5.

Preferably, the temperature thermocouples 5 are printed single-ended collinear multiple thermocouples.

Preferably, the thermo-thermocouple 5 is held by the holder 6.

Preferably, the change-over switch 7 and the switch 8 are electronic switches;

preferably, the temperature measuring processing system 9 is a P L C machine.

The invention relates to a temperature measuring method of a multipoint temperature measuring device of a heating non-combustion type cigarette heating device, which is a differential method; the method comprises the following steps:

① clamping the heating device 1 of the non-combustion cigarette to be tested and the temperature thermocouple 5 by a clamp 6, so that the heating device 1 is tightly jointed with the temperature thermocouple 5;

②, three-point temperature measurement is carried out on the heating device sample 1 by switching three temperature test points 2, 3 and 4 through the temperature measurement processing system 9P L C control switch 8 and the change-over switch 7;

③ the temperature measurement processing system 9P L C machine collects, calculates, records and displays the measured temperature value, and the multipoint temperature value of the heating device 1 is obtained.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.