Efficient heat exchanger

The utility model relates to the technical field of heat exchange equipment. The efficient heat exchanger comprises a shell, including a housing, a mounting plate is arranged in the shell; the interior of the shell is divided into a left chamber and a right chamber by the mounting plate; a partition plate is arranged in the right chamber; a first replacement pipe, a second replacement pipe, a third replacement pipe and a fourth replacement pipe which are connected with the mounting plate are arranged in the left chamber; the first replacement pipe and the fourth replacement pipe are connectedthrough a first coiled pipe, the second replacement pipe and the third replacement pipe are connected through a second coiled pipe, a heating pipe is arranged in the middle in the left cavity, lower partition plates are arranged on the two sides of the heating pipe, and an upper partition plate is arranged between the lower partition plates. According to the utility model, the shape of the shell is not changed through the