Thermistor type temperature sensor
A technology of temperature sensor and thermistor, which is used in thermometers, thermometers, instruments, etc., which are directly sensitive to heat by electrical/magnetic components. Insensitive to external temperature changes, etc., to achieve the effect of improving sensitivity
Inactive Publication Date: 2019-04-30
NANJING KAITIANYAN UAV TECH CO LTD
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Problems solved by technology
[0003] However, since the body of the temperature sensor is generally made of composite materials, the thermal conductivity is poor, and the upper and lower lead-out inserts and the thermistor are in a completely closed body, so the thermistor's response to temperature changes is slow. Make the internal thermistor insensitive to external temperature changes, and its time constant index has decreased
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[0014] The present invention will be further explained below in conjunction with the accompanying drawings.
[0015] Such as figure 1 As shown, the present invention provides a thermistor temperature sensor, which includes a body 1, a first lead-out insert 2 and a second lead-out insert 3 are arranged in the body 1, and the first lead-out insert 2 and the second lead-out insert There is a thermistor 4 between the sheets 3; the ends of the first lead-out insert 2 and the second lead-out insert 3 connected to the thermistor 4 are respectively connected with an extension 6, and the main body 1 is provided with an extension 6 corresponding to the position of the extension 6. Corresponding through holes 5 . The through hole 5 is used to introduce the liquid to be tested, so that the liquid to be tested directly contacts the extension part 6 and conducts heat to the thermistor 4 quickly. The liquid to be tested can contact the extension part 6 from both sides of the main body 1, a...
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The invention discloses a thermistor type temperature sensor comprising a body. A first lead-out plugging piece and a second lead-out plugging piece are disposed in the body. A thermistor is disposedbetween the first lead-out plugging piece and the second lead-out plugging piece; extending parts are arranged at ends, connected with the thermistor, of the first lead-out plugging piece and the second lead-out plugging piece; and penetration holes corresponding to the extending parts are formed in the body. The connection mode for the first lead-out plugging piece and the second lead-out plugging piece with the thermistor employs the mode of combining the spot welding with the tin soldering. The first lead-out plugging piece and the second lead-out plugging piece are made of materials with high thermal conductivity. According to the invention, with the penetration holes, to-be-measured liquid is in contact with the lead-out plugging pieces directly in the penetration holes and the lead-out plugging pieces transfer the heat of the liquid to the thermistor rapidly, so that the sensitivity of the thermistor to sense the external temperature change is enhanced.
Description
technical field [0001] The invention relates to the technical field of temperature sensors, in particular to a thermistor temperature sensor. Background technique [0002] Temperature sensors have been widely used in the automotive industry, especially water temperature and oil temperature sensors widely adopt injection molding technology, which greatly simplifies the process and improves the reliability of the product, but the original structure of the temperature sensor has the same shape. , The lower lead-out inserts are arranged symmetrically, the thermistor is connected to one end of the upper and lower lead-out inserts by electric welding, the thermistor is sealed in the sensor package, when the temperature sensor is put into the liquid to be tested, due to The change of temperature will cause the resistance value of the thermistor to change, so that the current detected by the upper and lower lead-out inserts will change, thus realizing the detection of temperature. ...
Claims
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IPC IPC(8): G01K7/22
CPCG01K7/22
Inventor 石晓雨杨廷龙林冲辛红雨
Owner NANJING KAITIANYAN UAV TECH CO LTD