The low temperature thermostat is widely used in chemical, petroleum, medicine, biology, physical chemistry, metrology, universities, electronic instruments, scientific research institutions and other fields for experiments. In order to meet the requirements of the constant temperature environment for the main components of the LPG density meter Large, size φ260 × 420, mixing area φ160 × 420, total volume 34 liters, other properties are: working temperature range 10 ° c ~ 95 ° c, working ambient temperature less than 30 ° c, total power 3kw, power 220v/50hz, Can work in ordinary laboratories.

The working principle of the thermostatic bath

In order to ensure the stability and uniformity of the medium temperature in the working area, we chose the tank structure scheme with side stirring. The working principle of the constant temperature tank will be explained according to the flow process of the working medium in the tank: under the impetus of stirring, the working medium flows from top to bottom in the mixing area, and firstly conducts heat exchange with the coil evaporator and heater, so that the After the flowing medium reaches a certain suitable temperature, it is vigorously stirred by the agitator to fully mix the medium with uneven temperature, and then the medium is pushed out from the bottom, and then led up into the working area. When the medium flows through the working area, it is required to minimize the heat exchange with the outside world to ensure the uniform temperature of the medium in the working area and create favorable conditions for high-quality temperature control. After that, the medium flows into the mixing zone and the cycle is repeated. The temperature sensing element of the temperature control system is placed in the fluid to measure the temperature signal. The temperature control system adjusts the output pulse signal according to the temperature change measured by the temperature sensing element, and drives the triac to push the heater to heat, thereby controlling the bath temperature to work at the set temperature.

When the tank temperature is close to or lower than room temperature, the constant temperature tank refrigeration technology system is put into operation in the market. It cools the working environment medium through the coil evaporator installed in the tank body to achieve economical cooling. In order to improve the cooling rate of the medium, the cooling capacity can be adjusted in two stages. When the cooling starts, the refrigerator can be operated under the condition that the evaporating temperature is high and the load has a great influence. When working in construction near the constant temperature or the lower limit temperature, make the refrigerator work under the conditions of relatively low evaporating temperature and small load, so that we also have some advantages for the temperature to be stabilized. At a constant temperature, two important components of cooling and heating in the constant temperature tank manage work at the same time. The main development of cooling device research is to provide cooling capacity for cooling and target to maintain the required low temperature, while the heater is used to analyze and provide a balance of heat to achieve China. temperature is under control.

Thermostatic bath temperature control system:

The liquid thermostatic device requires stable temperature in the control area and a very uniform distribution. On the one hand, the structure of the constant temperature tank is reasonably designed, involving temperature components, heater and evaporator structure, installation location and medium thermal uniformity, device insulation, heat insulation, heat preservation, machine Stable and reliable operation. Another determining factor when deciding on a thermostatic bath configuration is the temperature control system.

  Cooling System:

The refrigeration system of this device adopts a single-stage vapor compression refrigeration cycle system, the refrigerant is R22, the compressor discharges high-temperature and high-pressure superheated steam by air-cooling condensation and condenses into high-pressure liquid, and the heat in the working medium in the tank is absorbed to form low-pressure superheated steam, which is The suction compressor compresses the discharge, and heat is continuously absorbed into the working medium to cool it.

The above is the working principle of the thermostatic bath and the introduction of the two major control systems. If you want to know more, you can contact us at any time! Our company has many years of experience and is looking forward to your joining at any time.