Temperature control device for condensation particle counter

Abstract

The invention discloses a temperature control device for a condensation particle counter, and can solve the technical problem that a temperature control system for the condensation particle counter isrelatively large in volume and relatively high in power consumption and is low in applicability. Peltier is arranged inside a condensation cavity, the condensation cavity is internally provided witha condensation cavity thermistor, a saturation cavity is internally provided with a saturation cavity thermistor, and the hot surface of the Peltier is provided with a cooling fin. The temperature control device also comprises a cooling liquid loop system, the cooling liquid loop system comprises 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, the return line is guided out from the liquid pump, passes through the cooling fin and then runs through an optical cavity to be connected into the saturation cavity. The temperature control device also comprises a temperature control circuit, and the condensation cavity thermistor, the condensation cavity thermistor, the Peltier and the liquid pump are connected with the temperature control circuit respectively. According to the temperature control device, the temperature control speed is high, the saturation cavity and the optical cavity areheated uniformly, the diffusion uniformity of butyl alcohol steam is facilitated, the uniformity of particle growth is controlled, and the power consumption and volume are further greatly reduced.

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 that measures the concentration of particles in the air. After years of development, due to the accuracy of particle measurement, it has become a kind of measurement that is often used to measure tiny aerosol particles in the air. Standard instrument for several concentrations. There are usually a large number of invisible particles in the air, with diameters ranging from micrometers to nanometers. After these tiny particles enter the optical cavity of the particle counter, they are difficult to be detected by the detector due to their weak scattered light. Through other methods of condensing the working fluid 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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