Temperature detection device equipped with mechanical filter

Abstract

The invention discloses a temperature detection device equipped with a mechanical filter, including a filter, a temperature sensor, a control circuit and a housing. The filter includes an energy storage part suitable for heat storage, a protruding part on the energy storage part, and flaky fin parts. The protruding part at least protrudes from the upper surface of the energy storage part. The finparts are arranged on at least one surface of the energy storage part, and the fin parts are in thermal contact with and fixed to the energy storage part. A blind hole shaped temperature measuring part with the upper end closed is arranged inside the protruding part. The temperature sensor is assembled together with the temperature measuring part to detect the temperature of the blind end of the temperature measuring part. Through the flow of fluid, ultralow-frequency disturbance signals with the period up to a number of minutes are produced. The temperature detection device filters the ultralow-frequency disturbance signals through the mechanical filter, and accurately detects the temperature of fluid. Therefore, there is no interference of disturbance signals during heat treatment. The amplitude of fluctuation of fluid temperature is very small. The temperature of fluid can be easily stabilized at a set value, the time for temperature stabilization is short, and energy can be saved.

Description

technical field [0001] The invention relates to a temperature detection device, in particular to a temperature detection device configured with a mechanical filter applied to temperature signal detection, belonging 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 ...

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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