A temperature detection device equipped with a mechanical filter

Abstract

The invention discloses a temperature detection device equipped with a mechanical filter, which comprises a filter, a temperature sensor, a control circuit and a casing. The filter includes an energy storage part suitable for heat storage, a protruding part arranged on the energy storage part and a sheet-shaped fin part, and the protruding part at least protrudes from the upper surface of the energy storage part. Fins are provided on at least one surface of the energy storage part, and the fins are in thermal contact with and fixed to the energy storage part. The inside of the raised part is provided with a blind hole-shaped temperature measuring part with a closed upper end, and the temperature sensor is assembled with the temperature measuring part to detect the temperature of the blind end of the temperature measuring part. The flow of the fluid generates an ultra-low frequency disturbance signal with a period as high as several minutes. The temperature detection device filters out the above-mentioned ultra-low frequency disturbance signal through the assembled mechanical filter, and accurately detects the temperature of the fluid. In the heat treatment, no Disturbance signal interference, the fluctuation range of the fluid temperature is extremely small, it is easy to be stabilized at the set value, and the time for temperature stabilization is short, which is beneficial to save energy consumption.

Description

technical field [0001] The invention relates to a temperature detection device, in particular to a temperature detection device configured with a mechanical filter for temperature signal detection, and belongs to the field of temperature signal detection. Background technique [0002] The fluid is subjected to heat treatment such as heating and cooling, and the temperature distribution is uneven. Under the action of gravity, a natural convection flow field is generated. There are a large number of advection, turbulence, and turbulent flow areas inside the fluid, and the temperature distribution of the fluid is uneven. Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, so that the temperature detection devices in the prior art cannot accurately measure During the heat treat...

AI Technical Summary

Problems solved by technology

Fluid flow with uneven temperature distribution generates disturbance interference signals to temperature detection, forming ultra-low frequency disturbance signals with a period of several minutes, and it is difficult for electronic filters to filter out, so that the temperature detection devices in the prior art cannot accurately measure The temperature of the fluid, during the heat treatment process, due to the interference of the disturbance signal, the temperature of the fluid is not easy to be stabilized at the set value, which takes a long time and increases energy consumption

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