Constant-temperature self-cleaning air energy water heater

The utility model provides a constant-temperature type self-cleaning air energy water heater, and belongs to the technical field of heat exchange mechanisms of air energy water heaters. The device comprises a water tank and a spiral heat exchange coil pipe, three annularly-distributed mounting mechanisms are fixed to the heat exchange coil pipe, the upper end and the lower end of each mounting mechanism are provided with abutting rods with the adjustable length, one end of each abutting rod can abut against the inner wall of the water tank, and the heat exchange coil pipe is detachably installed in the water tank through the abutting rods. A cover plate is detachably mounted at the top of the water tank. The structural firmness of the heat exchange coil pipe is effectively enhanced, the heat exchange coil pipe and the inner wall of the water tank are convenient to disassemble and assemble, the working efficiency is improved, meanwhile, the heat exchange coil pipe is effectively prevented from deviating and de