Constant pressure make-up water vacuum exhaust device

● Exhaust function:
      After the system water enters the vacuum tank under negative pressure, the gas and water are separated. The separated gas is discharged through the exhaust valve, and the discharged water is injected into the system by the pump, repeating the cycle. This effectively solves the air problem in the piping system
● Exhaust principle:
      When the vacuum exhaust equipment is operating, the pump runs to replenish the water in the vacuum tank back into the system, simultaneously evacuating the vacuum, and the water in the system is discharged back into the vacuum tank. Due to the large pressure changes, the system water begins to separate gas and water in the vacuum. As the water continuously releases pressure into the vacuum, the separated gas is compressed and expelled through the exhaust valve.
● Constant pressure hydration function:
       When the system pressure of a closed air conditioning system rises due to temperature or other factors, the overflow solenoid valve of the constant pressure equipment opens, allowing the cold (heating) medium water in the closed system to be released into atmospheric pressure, lowering the system pressure to the normal set value; When the pressure of the closed air conditioning system drops due to temperature or other factors, the constant pressure equipment activates the booster pump to supplement the heat medium from the atmospheric pressure tank into the system to maintain normal pressure.

device features
       Precise pressure determination function: regulates the volume expansion and contraction of water caused by temperature changes in the circulating water system, keeping the system pressure constant; The pressure sensor detects system pressure in real time and outputs signals to the control unit, thereby precisely stabilizing system pressure and ensuring the stable operation of the water system. The constant pressure value can be set on-site according to the requirements of the air conditioning water system. ± deviation can be set freely (default ± 0.02 MPa).

       Vacuum exhaust function: According to Henry's Law, a vacuum environment is artificially created (inside a vacuum tank), where water from the system is introduced into the vacuum tank for intense gas-water separation. The almost gas-free water is then replenished back into the system. This unsaturated water has a strong adsorption capacity for gases, absorbing bubbles and gas blockages in the system, and then carrying this gas back to the automatic vacuum exhaust device for centralized discharge. The water in the system will exist in an unsaturated form (with almost zero gas content), and even if the temperature rises, the water will not release gases again. This achieves centralized exhaust and exhaust, and the parallel connection method with the system does not cause pressure fluctuations in the system.