Sample temperature adjusting device applied to spectral analysis experiment

Abstract

The invention discloses a sample temperature adjusting device applied to a spectral analysis experiment. The device is divided into two parts: a temperature adjusting box and a temperature control circuit, wherein the temperature adjusting box is used for increasing a sample temperature and a detected sample temperature; the temperature control circuit is used for realizing control of temperature heating and temperature feedback as well as temperature presetting and displaying. More particularly, the temperature adjusting box, which is a box-shaped structure, is mainly composed of a thermal insulating layer, a movable sample support, a fixed sample support, a temperature sensor probe, a heat-resisting baffle plate, a heat-resisting baffle plate support and a heating element; and the temperature control circuit consists of a power supply circuit, a power amplification and heating circuit, an acousto-optic prompting circuit, a microprocessor control circuit, a temperature presetting and display circuit and a temperature sensor module. According to the invention, beneficial effects of the device are as follows: a sample placing method is not changed and forming of a temperature gradient inside the sample can be avoided; moreover, adjustment and control on the temperature of the sample can be rapidly carried out within a certain temperature range.

Description

technical field [0001] The invention relates to a temperature regulating device, in particular to a sample temperature regulating device used in spectral analysis experiments. Background technique [0002] Infrared spectroscopy is a useful means to identify substances and analyze the structure of substances, and has been widely used in the qualitative identification and quantitative analysis of various substances, as well as the study of intermolecular and intramolecular interactions. Infrared spectrometer has become one of the most widely used instruments in chemical analysis. The laser infrared spectrometer developed at present has high energy, good monochromaticity and high sensitivity. In recent years, it has been widely used in medicine, petroleum, chemical industry, environmental protection, Food, materials, public security, national defense, semiconductor, optics and other fields. Some experimental samples have certain sensitivity to temperature, and there are certai...

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Problems solved by technology

In the past, the technology of changing the temperature of the solid sample was to directly heat the solid sample with a heating element, but this technology mainly has two shortcomings: one is that the original placement method of the sample has to be changed, and the operation is inconvenient; the other is that the heating wire is placed in the At the edge of the experimental sample, there is a large temperature gradient when heat is conducted from the edge of the sample to the center of the sample, and the waiting time for the temperature at the edge of the sample to reach the same temperature at the center is usually not less than 15 minutes, which reduces the efficiency of the experiment

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