CN210441993U

CN210441993U - Temperature detector based on thermoelectric effect

Info

Publication number: CN210441993U
Application number: CN201921309688.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Huaihua Leyuan Agricultural Development Co Ltd
Current assignee: Huaihua Leyuan Agricultural Development Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-05-01
Anticipated expiration: 2029-08-13

Abstract

The utility model relates to a temperature detector based on thermoelectric effect, this temperature detector include kernel portion and outer shell portion, and kernel portion includes detection portion, thermoelectric material and the afterbody that connects gradually, and outer shell portion contains outside kernel portion, and outer shell portion comprises aerogel layer and the glass layer that sets up from inside to outside. When the temperature measuring device is applied, the detecting part and the tail part are connected with the electrodes, the potential difference between the two electrodes is measured, the temperature difference between the detecting part and the tail part is deduced through the potential difference, and therefore the temperature of the detecting part is measured. Because the aerogel layer and the glass layer are arranged outside the detection part, the thermoelectric material and the tail part, the heat transmission is prevented, and the measurement accuracy is improved. In addition, a silver film layer is arranged outside the glass layer, and the silver film layer is favorable for reflecting heat radiation generated by the detection part, the thermoelectric material or the tail part into a device, so that the measurement accuracy is further improved.

Description

Temperature detector based on thermoelectric effect

Technical Field

The utility model relates to a temperature detection field, concretely relates to temperature detector based on thermoelectric effect.

Background

The thermoelectric effect refers to that when a semiconductor is at different temperatures, carriers in the semiconductor move from a high temperature region to a low temperature region along with a temperature gradient, thereby generating charge accumulation and a potential difference. The measurement of the temperature can be realized by measuring the potential difference. In practical applications, the uncertainty of heat dissipation causes large errors in measurement when heat is transferred on the thermoelectric material. Reducing these uncertainties on the measuring device will greatly improve the accuracy of the measurement.

Disclosure of Invention

In order to solve the above problem, the utility model provides a temperature detector based on thermoelectric effect, this temperature detector include kernel portion and outer shell portion, and kernel portion includes detection portion, thermoelectric material and the afterbody that connects gradually, and outer shell portion contains outside kernel portion, and outer shell portion comprises aerogel layer and the glass layer that sets up from inside to outside. When the temperature measuring device is applied, the detecting part and the tail part are connected with electrodes, the potential difference between the two electrodes is measured, the temperature difference between the detecting part and the tail part is deduced through the potential difference, and the temperature of the detecting part is measured under the condition that the temperature of the tail part is known.

Further, the material of the aerogel layer is silica aerogel.

Further, the thermoelectric material is Bi₂Te₃、SbTe₃Or Te.

Further, the material of the probe portion and the tail portion is a good conductor of heat.

Further, at the connection of the detection part and the pyroelectric material, the cross-sectional size of the detection part is smaller than that of the pyroelectric material, and the pyroelectric material surrounds one end of the detection part connected with the pyroelectric material.

Further, at the connection of the tail portion with the thermoelectric material, the cross-sectional dimension of the tail portion is smaller than the cross-sectional dimension of the thermoelectric material, and the thermoelectric material surrounds the end of the tail portion connected with the thermoelectric material.

Further, the detecting portion is disposed outside the housing portion.

Furthermore, a silver film layer is arranged outside the glass layer.

Furthermore, a protective layer is arranged outside the silver film layer.

The utility model has the advantages that: the utility model provides a temperature detector based on thermoelectric effect is provided with aerogel layer and glass layer outside detection portion, thermoelectric material, afterbody, has prevented the heat transfer, has improved the measuring accuracy. In addition, the silver film layer arranged outside the glass layer is beneficial to reflecting heat radiation generated by the detection part, the thermoelectric material or the tail part to the device, and the measurement accuracy is further improved.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a temperature probe based on the thermoelectric effect.

In the figure: 1. a thermoelectric material; 2. a detection section; 3. a tail portion; 4. an aerogel layer; 5. and (4) a glass layer.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.

Example 1

The utility model provides a temperature detector based on thermoelectric effect as shown in figure 1, this temperature detector include kernel portion and outer shell portion, and kernel portion includes detection portion 2, thermoelectric material 1 and afterbody 3 that connect gradually, and outer shell portion contains outside kernel portion, and outer shell portion comprises aerogel layer 4 and glass layer 5 that set up from inside to outside. The detection part is arranged outside the shell part, so that the detection part can be conveniently inserted into the fluid needing temperature measurement. The material of the aerogel layer 4 is silica aerogel. Thermoelectric material 1 is Bi₂Te₃、SbTe₃Or Te. The material of the probe 2 and the tail 3 is a good conductor of heat. When the temperature measuring device is applied, the detecting part 2 and the tail part 3 are connected with electrodes, the potential difference between the two electrodes is measured, the temperature difference between the detecting part 2 and the tail part 3 is deduced through the potential difference, and the temperature of the detecting part 3 is measured under the condition that the temperature of the tail part 3 is known.

Further, at the junction of the detecting part 2 and the pyroelectric material 1, the sectional size of the detecting part 2 is smaller than that of the pyroelectric material 1, and the pyroelectric material 1 surrounds the end of the detecting part 2 connected to the pyroelectric material 1. Further, at the connection of the tail portion 3 and the thermoelectric material 1, the cross-sectional dimension of the tail portion 3 is smaller than that of the thermoelectric material 1, and the thermoelectric material 1 surrounds the end of the tail portion 3 connected to the thermoelectric material 1. These arrangements facilitate sufficient thermal contact between the probe 2 and the pyroelectric material 1, and between the tail 3 and the pyroelectric material 1, thereby improving the accuracy of measurement.

Example 2

On the basis of the embodiment 1, a silver film layer is arranged outside the glass layer 5, and a protective layer is arranged outside the silver film layer. The silver film layer is beneficial to reflecting heat radiation generated by the detection part, the thermoelectric material or the tail part in the device, and the measurement accuracy is further improved. The protective layer is used for containing the silver film layer and preventing the silver film layer from being oxidized and worn.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a temperature detector based on thermoelectric effect, includes kernel portion and shell portion, kernel portion is including the detection portion, thermoelectric material and the afterbody that connect gradually, and shell portion contains outside kernel portion, detection portion and afterbody connection electrode, its characterized in that: the outer shell portion is composed of an aerogel layer and a glass layer arranged from the inside to the outside.

2. The thermoelectric effect based temperature sensor as claimed in claim 1, wherein: the aerogel layer is made of silicon dioxide aerogel.

3. The thermoelectric effect based temperature sensor as claimed in claim 2, wherein: the thermoelectric material is Bi₂Te₃、SbTe₃Or Te.

4. A thermoelectric effect based temperature probe as recited in claim 3, wherein: the materials of the detection part and the tail part are good thermal conductors.

5. The thermoelectric effect based temperature sensor as claimed in claim 4, wherein: and the cross section size of the detection part is smaller than that of the thermoelectric material at the position where the detection part is connected with the thermoelectric material, and the thermoelectric material surrounds one end of the detection part connected with the thermoelectric material.

6. The thermoelectric effect based temperature sensor as claimed in claim 5, wherein: the tail portion has a cross-sectional dimension smaller than a cross-sectional dimension of the thermoelectric material at a connection of the tail portion and the thermoelectric material, the thermoelectric material surrounding an end of the tail portion to which the thermoelectric material is connected.

7. A temperature probe based on the thermoelectric effect according to any of claims 1 to 5, wherein: the detection part is arranged outside the shell part.

8. The thermoelectric effect based temperature sensor as claimed in claim 7, wherein: and a silver film layer is also arranged outside the glass layer.

9. The thermoelectric effect based temperature sensor of claim 8, wherein: and a protective layer is also arranged outside the silver membrane layer.