The evaporator header pipe is an important component in the evaporator system, used to connect multiple evaporator tubes or collect refrigerant fluid. Here is a brief introduction about it:
Structural composition: Different types ofevaporator header pipe have different structures. Taking the evaporator manifold of a vehicle air conditioning system as an example, it usually includes parts such as the box, head, partition wall, partition plate, and cover plate. The box has refrigerant channels through which refrigerant flows; The head is formed as a plate with multiple through holes for forming the contact points of the terminal portion of the tube; Partition walls and partitions are used to divide and change the space of refrigerant channels; The cover plate is used to seal the opening of the box. In the evaporator of some air conditioning units, a left collection pipe, a right collection pipe, and a main collection pipe are installed. The left collection pipe and the right collection pipe are arranged in a "V" shape, and their outlets are connected to the main collection pipe through bends or adapters.
Working principle: The main function of the evaporator header pipe is to distribute and collect refrigerant. In the refrigeration system, the high-temperature and high-pressure liquid refrigerant from the condenser enters the evaporator through the supply manifold, which evenly distributes the refrigerant to each evaporator tube. After absorbing heat and evaporating in the evaporator tube, the refrigerant becomes a low-temperature and low-pressure gaseous refrigerant, which is then collected through the return manifold and compressed by the compressor to complete the refrigeration cycle. For example, in a central circulation tube evaporator, the solution is heated and vaporized in the heating tube, and the generated steam is discharged through the main pipe. The unvalidated solution, due to its density difference, decreases along the central circulation tube and enters the heating tube to continue heating and evaporating, forming a natural circulation.
Application field: The evaporator header pipe is widely used in various refrigeration and evaporation equipment. In the field of air conditioning, whether it is household air conditioning, car air conditioning, or large central air conditioning systems, an evaporator manifold is required to distribute and collect refrigerant to ensure refrigeration efficiency. In industrial production, such as the evaporation and concentration process in the chemical, food, pharmaceutical and other industries, evaporator manifolds are also used. For example, central circulation tube evaporators are commonly used in industrial production processes where scaling is not severe, there is a small amount of crystallization and precipitation, and solutions with low corrosiveness are evaporated.
