A temperature control device for condensation particle counter

Abstract

A temperature control device for a condensation particle counter can solve the technical problems of large volume and power consumption of the temperature control system of the condensation particle counter and poor applicability. A Peltier is arranged in the condensation chamber, a condensation chamber thermistor is arranged in the condensation chamber, a saturation chamber thermistor is arranged in the saturation chamber, a heat sink is arranged on the hot surface of the Peltier; a cooling liquid circuit is also included system, the cooling liquid loop system includes a cooling liquid storage tank, a liquid pump and a return line, the cooling liquid storage tank is connected to the liquid pump through the return line, and the return line is drawn from the liquid pump, passes through the heat sink, and then passes through the The optical cavity is connected to the saturation cavity; a temperature control circuit is also included, and the condensation cavity thermistor, the cavity thermistor, the Peltier and the liquid pump are respectively connected with the temperature control circuit. The invention not only has a fast temperature control speed, uniform heating of the saturation chamber and the optical chamber, is beneficial to the uniformity of the diffusion of the butanol vapor, controls the consistency of particle growth, and greatly reduces power consumption and volume.

Description

technical field [0001] The invention relates to the technical field of butanol condensation particle counters, in particular to a temperature control device for condensation particle counters. Background technique [0002] Condensation Particle Counters (CPC) is an instrument for measuring the concentration of particles in the air. After years of development, due to the accuracy of particle measurement, it has become a commonly used instrument for measuring tiny aerosol particles in the air. A standard instrument for several concentrations. Usually there are a large number of invisible particles in the air, with diameters ranging from microns to nanometers. After these tiny particles enter the optical cavity of the particle counter, they are difficult to be found by the detector due to their weak scattered light. Therefore, it is necessary to By condensing other working fluids on the particles, the size of the detected particles becomes larger and can be received by the det...

AI Technical Summary

Problems solved by technology

[0006] A temperature control device for a condensed particle counter proposed by the present invention can solve the technical problems of large volume and power consumption of the temperature control system of the condensed particle counter and poor applicability

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