Air conditioner heat exchanger

The utility model discloses an air conditioner heat exchanger which comprises a plurality of fin plates and a plurality of refrigerant pipes, wherein the fin plates are mutually arranged in parallel at certain intervals, and air can flow among the fin plates; the refrigerant pipes are arranged in at least two rows and are vertically inserted into the fin plates, so that fluid media can flow through the refrigerant pipes, and the pipe diameter of the refrigerant pipes is 7 millimeters. The refrigerant pipes are copper pipes. Compared with the prior art, the air conditioner heat exchanger provided by the utility model has more compact structure; since the refrigerant pipes with the pipe diameter of 7 millimeters are adopted, the performance of the heat exchanger is improved by 8.05-16.32 percent and the manufacturing cost of the heat exchanger is lowered by 21.6-31.18 percent.