Heat exchanger of air conditioner with double rows of pipelines

The invention relates to the technical field of the heat exchanger of an air conditioner, which provides a heat exchanger of an air conditioner with double rows of pipelines with a novel refrigerant procedure. The heat exchanger can enhance the efficiency of heat exchange simultaneously during refrigeration and heating. The heat exchanger divides a refrigerant into three paths to flow into the heat exchanger, all the three paths of refrigerants flow from the inner row of the heat exchanger and finally flow out from the outer row of the heat exchanger, a reversed U type layout is adopted, and full-range countercurrent heat exchange is realized; the design of a three-path refrigerant procedure considers the influence of gravity, adopts an unequal-range flow path and enhances the uniformity of the heat exchange of each path during refrigeration, thereby enhancing the heat exchange coefficient and the heat exchange quantity; and the invention adopts an unequal diameter design for a convergence pipe of the three p