Air heat exchanger for boiler

The utility model discloses an air heat exchanger for a boiler, which comprises an air heat exchanger main body, an inner pipe is spirally arranged in the air heat exchanger main body, and enamel is fired on the inner wall and the outer wall of the inner pipe. A hot air inlet pipe is arranged at the upper end of the air heat exchanger body, and a hot air outlet pipe is arranged at the front end of the air heat exchanger body. The right end of the air heat exchanger body is detachably connected with a right end cover, the right end cover is fixedly connected with a mounting seat, the mounting seat is connected with an air inlet pipe assembly, the mounting seat is provided with a locking mechanism, and the locking mechanism comprises a linkage assembly and two locking assemblies. The linkage assembly can drive the two locking assemblies to lock or release the insertion rod inserted into the insertion groove. Enamel is fired on the inner wall and the outer wall of the inner pipe, so that the inner pipe is resist