CN218297394U

CN218297394U - Temperature measuring sensor

Info

Publication number: CN218297394U
Application number: CN202222932819.4U
Authority: CN
Inventors: 白书明; 高华; 朱思宇
Original assignee: Deyang Carbonene Technology Co ltd
Current assignee: Deyang Carbonene Technology Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-01-13
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a temperature measuring sensor, which comprises a heated fin, a heat conducting cover shell, a heat conducting insulating material, a glass fiber connecting wire and a temperature measuring probe, wherein the heat conducting cover shell is fixed on the heated fin, and a cavity is formed between the heat conducting cover shell and the heated fin; the temperature measuring probe is wrapped and fixed in the cavity through the heat-conducting insulating material, and the glass fiber connecting wire penetrates through the heat-conducting insulating material and enters the cavity to be connected with the temperature measuring probe. The temperature sensor measures temperature by adopting an indirect heat conduction mode based on the thermal resistor or the thermocouple, has the advantages of high temperature resistance, high temperature sensing speed and accurate temperature measurement, and solves the technical problems that the temperature sensor does not resist temperature or does not measure temperature accurately in the prior art.

Description

Temperature measuring sensor

Technical Field

The utility model relates to a temperature measurement technical field, specifically speaking relate to a temperature sensor, temperature measurement when being particularly useful for utilizing infrared heating.

Background

A temperature sensor is a sensor that senses temperature and converts it into a usable output signal. The temperature sensor is the core part of the temperature measuring instrument and has a plurality of varieties. The measurement method can be divided into a contact type and a non-contact type, and the measurement method can be divided into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements. With the development of heating technology and the market demand, temperature sensors are also widely used in various industries.

At present, many heating techniques are involved, for example, an infrared heating technique, an electric heating technique, and the like. The infrared heating technology is to irradiate infrared rays emitted from an infrared radiator (generator) onto an object to be heated, wherein the infrared rays are absorbed by the object and converted into thermal motion of substance molecules except for being reflected and transmitted, so that the object is heated.

At present, for the industry using infrared heating technology, there are two general temperature measuring methods, which are as follows:

the first method comprises the following steps: the infrared temperature measurement sensor is used for measurement, the principle is that infrared radiation light of a measured object is utilized, an optical signal is focused on the sensor through a front end infrared lens, the sensor converts the optical signal into an electric signal, the electric signal is amplified and filtered by a subsequent circuit and then is sent into an analog-to-digital converter, a microprocessor reads a voltage value, the voltage is converted into temperature through a voltage-temperature conversion function, and finally the temperature is displayed on a display. The infrared temperature measurement sensor is a non-contact appliance for realizing temperature measurement by receiving infrared radiation of an object, can intuitively measure the temperature of the surface of the object, but a probe of the sensor comprises an optical lens and a chip, is not high-temperature resistant, and requires the ambient temperature of the probe to be less than 80 ℃ during actual measurement, so the infrared temperature measurement sensor is not suitable for temperature measurement in a high-temperature environment, is greatly limited, and influences the universality of the infrared temperature measurement sensor.

And the second method comprises the following steps: the temperature of the heating space can be directly tested by utilizing the thermal resistor or the thermocouple matched with the temperature display instrument, the thermal resistor or the thermocouple can resist high temperature, and the temperature of the measurable space can reach thousands of degrees centigrade. However, the infrared heating technique has a very low heating efficiency for air, and when the temperature is raised from room temperature to 200 ℃ at a rate of 50 ℃/min, the temperature of the heated object is measured by contact at 200 ℃, but the temperature of the air at the same position as the surface to be measured is only 90 ℃. Thus, the temperature cannot be directly measured in this manner as well when infrared heating is used.

SUMMERY OF THE UTILITY MODEL

The utility model provides a temperature sensor, this temperature sensor adopt indirect heat conduction's mode to carry out the temperature measurement based on thermal resistance or thermocouple, have the temperature resistant height, the temperature sensing is fast, the accurate advantage of temperature measurement, have solved among the prior art temperature sensor not temperature resistant or the inaccurate technical problem of temperature measurement.

In order to achieve the above object, the utility model adopts the following technical scheme:

a temperature measurement sensor is characterized in that: the temperature measurement device comprises heated fins, a heat conduction housing, a heat conduction insulating material, a glass fiber connecting wire and a temperature measurement probe, wherein the heat conduction housing is fixed on the heated fins, and a cavity is formed between the heat conduction housing and the heated fins; the temperature measuring probe is wrapped and fixed in the cavity through the heat-conducting insulating material, and the glass fiber connecting wire penetrates through the heat-conducting insulating material to enter the cavity and then is connected with the temperature measuring probe.

The temperature measuring probe is a thermal resistor or a thermocouple which is directly contacted with the heated fin.

And a heat-absorbing coating layer is sprayed on the heated fins.

The heated fins are of a plane structure or an arc structure.

The heated fins are aluminum fins or copper fins, and fixing holes are formed in the heated fins.

The heat-conducting insulating material is heat-conducting epoxy resin or heat-conducting packaging glass.

Adopt the utility model has the advantages of:

1. the utility model discloses be equipped with the heat conduction housing on the fin that is heated to fix the temperature probe parcel in the cavity of housing through heat conduction insulating material, it is when carrying out actual temperature measurement in the infrared heating technique, the fin that is heated, heat conduction housing and heat conduction insulating material homoenergetic are heat-conducting, the mode that has adopted indirect heat conduction in other words carries out the temperature measurement, it is high not only to have the temperature resistance, the temperature sensing is fast, the accurate advantage of temperature measurement, the not temperature resistant or inaccurate technical problem of temperature measurement of temperature sensor among the prior art has still been solved effectively. In addition, the temperature measuring probe can be effectively fixed through the heat-conducting insulating material, so that the tensile resistance of the temperature measuring probe and the glass fiber connecting wire is improved.

2. The utility model discloses a different radiance's the fin that is heated can be allotted to the heat absorption dope layer to reach the radiance close with the heated object, so that the temperature of the fin that is heated is unanimous with the heated object surface temperature, and then only need test the temperature of the fin that is heated, just can know the temperature on the heated object surface.

3. The utility model discloses the material of well heated fin can be aluminium matter fin or copper fin, and the shape can be planar structure or arc structure, has the advantage that the heat conduction effect is good and can be applicable to different operating mode demands.

4. The utility model discloses a fixed orifices on the fin that is heated is favorable to whole temperature sensor's effective installation.

5. The utility model discloses a heat conductive epoxy or heat conductive encapsulation glass have the advantage that the heat conduction effect is good as heat conduction insulating material, are favorable to promoting the accuracy of temperature measurement.

6. The utility model discloses the cross section of well heat conduction housing can be circular, arch, rectangle or oval, has the advantage that can comparatively evenly conduct heat, is favorable to promoting the accuracy of temperature measurement.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention.

Labeled as: 1. the device comprises a heated fin, 2, a heat conduction housing, 3, a heat conduction insulating material, 4, a glass fiber connecting wire, 5, a temperature measuring probe, 6 and a fixing hole.

Detailed Description

The utility model provides a temperature sensor, as shown in fig. 1, 2, it is including being heated fin 1, heat conduction housing 2, heat conduction insulating material 3, fine connecting wire 4 of glass and temperature probe 5. Wherein the content of the first and second substances,

the heated fin 1 can be an aluminum fin made of aluminum material or a copper fin made of copper material, preferably, the heat conductivity coefficient is more than 200W/(m.K) when the aluminum fin is adopted, and the heat conductivity coefficient is more than 400W/(m.K) when the copper fin is adopted. The heated fins 1 can be of a plane structure or an arc structure, and the size and the thickness of the heated fins can be correspondingly set according to requirements, so that the heated fins can be preferably stably supported. Of course, the heated fins 1 may also have other irregular structures and the like according to different working conditions and requirements. In addition, be convenient for the installation of heated fin 1, the utility model discloses still be equipped with fixed orifices 6 on heated fin 1, fixed orifices 6 can be four and distribute in the four corners of heated fin 1.

The heat conduction housing 2 is fixed on the heated fins 1, the heat conduction housing 2 is made of the same material as the heated fins 1, and a cavity is formed between the fixed heat conduction housing 2 and the heated fins 1. The utility model discloses must not inject heat conduction housing 2 shape, but for the convenience of installing the temperature probe 5 in heat conduction housing 2 can accurately measure the temperature of fin, consequently the cross section of preferred heat conduction housing 2 is arch (the shape of falling the U) to make temperature probe 5 can the direct mount be heated on fin 1 and the direct measurement be heated the temperature of fin 1, with this improvement temperature measurement speed and accuracy.

It should be noted that the heat conducting casing 2 may also be circular, rectangular, etc., and if the circular or rectangular heat conducting casing 2 is adopted, it is preferable that the contact surface between the heat conducting casing 2 and the heated fin 1 is provided with a hole to achieve the effect similar to an arch.

The temperature measuring probe 5 is wrapped and fixed in the cavity through the heat-conducting insulating material 3, the heat-conducting insulating material 3 is heat-conducting epoxy resin or heat-conducting packaging glass, the epoxy resin is preferably used as the heat-conducting insulating material 3 when the temperature measuring probe is resistant to below 150 ℃, and the packaging glass is preferably used as the heat-conducting insulating material 3 when the temperature measuring probe is resistant to above 150 ℃. It should be noted that, in order to improve the accuracy and speed of temperature measurement, the temperature measuring probe 5 is preferably a thermal resistor or a thermocouple, and the temperature measuring probe 5 is in direct contact with the heated fin 1. Of course, in some cases, the temperature measuring probe 5 can also be completely wrapped in the heat conducting insulating material 3, i.e. the heat conducting insulating material 3 is spaced between the temperature measuring probe 5 and the heated fin 1.

One end of the glass fiber connecting wire 4 penetrates through the heat-conducting insulating material 3 to enter the cavity and then is connected with the temperature measuring probe 5, and the other end of the glass fiber connecting wire 4 is connected with the temperature control instrument and used for displaying the specific testing temperature of the temperature measuring probe 5.

For the accuracy of further improvement temperature measurement, the utility model discloses the preferred spraying has the heat absorption dope layer on the fin 1 that is heated to with heat conduction housing 2, heat conduction insulating material 3 and temperature probe 5 through the fin 1 setting that is heated on the heat absorption dope layer. It is noted that the heat-absorbing coating layer is a high-temperature-resistant anticorrosive coating with good adhesion on aluminum or copper, and an acrylic resin coating, an epoxy coating or a mixed coating thereof is used at a temperature of below 150 ℃; and organic silicon coating or other inorganic high-temperature resistant coating is used at the temperature of more than 150 ℃.

The utility model discloses when practical application, can install temperature sensor in the parallel position of testee, the plane of the fin 1 that is heated is perpendicular with the infrared heating direction. When the infrared heating is started, the temperature of the heated fin 1 is consistent with that of the object to be measured, the temperature of the object to be measured can be accurately measured through the temperature measuring probe 5, and then the temperature is displayed through the temperature control instrument and the power of the heating plate is controlled, so that the heated object is subjected to temperature control according to the program temperature control.

The utility model discloses a temperature resistance is unanimous almost with the temperature resistance of original thermal resistance or thermocouple, and temperature probe 5 also can be able to bear or endure 300 ℃ temperature environment under 300 ℃'s temperature, does not have temperature sensitive components and parts such as optical system, infrared sensor, conversion chip, has improved the temperature resistance of product, has solved the defect that infrared temperature probe 5 of passive form is not temperature resistant.

The utility model discloses well radiance that is heated fin 1 is unanimous with the radiance of heated object, and under infrared irradiation, both surface temperature are unanimous basically, can be more accurate reflect the actual temperature of heated object. When the air temperature reaches 200 ℃, the surface temperature of the air can reach 300 ℃ by adopting the traditional method for testing the air temperature, and the danger is quite large for a heated object sensitive to the temperature, or the heated object is deteriorated or damaged, or accidents such as explosion and the like are caused. The indirect heat conduction temperature measurement method used by the utility model is equivalent to another temperature equivalent method, thereby having the advantages of high temperature resistance, high temperature sensing speed and accurate temperature measurement.

Any feature disclosed in this specification may, unless stated otherwise, be replaced by alternative features serving the same, equivalent or similar purpose; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.

Claims

1. A temperature measurement sensor is characterized in that: the temperature measurement device comprises a heated fin (1), a heat conduction housing (2), a heat conduction insulating material (3), a glass fiber connecting wire (4) and a temperature measurement probe (5), wherein the heat conduction housing (2) is fixed on the heated fin (1), and a cavity is formed between the heat conduction housing (2) and the heated fin (1); the temperature measuring probe (5) is wrapped and fixed in the cavity through the heat-conducting insulating material (3), and the glass fiber connecting wire (4) penetrates through the heat-conducting insulating material (3) to enter the cavity and then is connected with the temperature measuring probe (5).

2. The thermometric sensor of claim 1, wherein: the temperature measuring probe (5) is a thermal resistor or a thermocouple directly contacted with the heated fin (1).

3. A temperature sensor according to claim 1 or 2, wherein: and a heat absorption coating layer is sprayed on the heated fins (1).

4. The temperature sensor according to claim 1, wherein: the heated fins (1) are of a plane structure or an arc structure.

5. The temperature sensor according to claim 1, wherein: the heating fins (1) are aluminum fins or copper fins, and fixing holes (6) are formed in the heating fins (1).

6. The temperature sensor according to claim 1, wherein: the heat-conducting insulating material (3) is heat-conducting epoxy resin or heat-conducting packaging glass.