Constant temperature bath based on mixing cold and hot liquid to control temperature

Abstract

The invention relates to a thermostatic bath based on the mixed temperature control of cold and hot liquids, a main body thereof is a thermostatic bath body which adopts metal materials with large thermal conductivities and has a certain thickness; the thermostatic bath is characterized in that: the thermostatic bath is divided into a work area and a temperature regulation area, the middle is separated by a metal partition plate with a hole; a stirrer is provided with stirring paddles in both the temperature regulation area and the work area, horizontal stirring is implemented in the temperature regulation area, stirring on the vertical direction is implemented in the work area; an annular heat exchanger is arranged in the work area, the heat exchanger surrounds the stirring paddles; the side wall of the work area is provided with a hole and is connected with a return pipeline and a self-circulating pipeline; the side wall of the temperature regulation area is provided with a hole andis connected with a liquid injection pipeline. The thermostatic bath based on the mixed temperature control of cold and hot liquids of the invention can carry greater heat load, have large capacity, high precision and high anti-interference ability and facilitate the work of the heat exchanger in the internal temperature field thereof.

Description

(1) Technical field: [0001] The invention relates to a temperature-controlled constant temperature tank based on the mixing of cold and hot liquids, in particular to a liquid constant temperature tank based on the mixing of cold and hot liquids for temperature control, which can not only perform sensor temperature calibration, but also carry a relatively large heat load. It belongs to liquid constant temperature bath. (two) background technology: [0002] In many occasions in the analysis of fluid thermal physical properties, a precision liquid constant temperature bath with a large heat load is required, especially when the heat exchanger is placed in its internal temperature field for precise temperature control. It is characterized by large capacity, high power, high precision and strong anti-interference ability. [0003] At present, liquid constant temperature baths commonly produced and used abroad and in my country are as follows: figure 1 , figure 2 shown. [00...

AI Technical Summary

Problems solved by technology

[0006] 1. The bottom of the working area enters the liquid, and the upper end exits the liquid. In principle, there is a temperature difference in the vertical direction;

[0007] 2. There is no stirring in the horizontal direction, so the uniformity of the temperature field in the horizontal direction needs to be improved;

[0008] 3. The speed distribution in the working area is uneven, which is not conducive to the formation of a uniform temperature field;

[0010] 5. A large load will seriously affect the shape and performance of the temperature field

[0013] 1. Both the cold and heat source and the working area are in the same tank, and the influence of the source is difficult to eliminate, resulting in uneven temperature;

[0014] 2. The stirring in the working area is weak, and there is no division of vertical stirring and horizontal stirring;

[0015] 3. The heated liquid is directly mixed with the liquid in the working area, resulting in uneven temperature field;

[0016] 4. After the cold source enters the main constant temperature tank, although the heat is exchanged through the heat exchange bottom plate, there is no further mixing and stirring measures

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