Short-circuit electric heater convenient to install

The utility model discloses a short-circuit electric heater convenient to install, which comprises a plurality of U-shaped pipes, and the end parts of the plurality of U-shaped pipes are connected through an upper end part clamping plate, a middle clamping plate and a lower end part clamping plate; the upper end clamping plate comprises a first sub-plate and a second sub-plate; the first sub-plateand the second sub-plate are semicircular and are arranged in a bilateral symmetry mode, kidney-shaped through grooves matched with the U-shaped pipes are formed in the first sub-plate and the secondsub-plate, protrusions protruding outwards are arranged at the ends of the first sub-plate, and grooves matched with the protrusions are formed in the ends of the second sub-plate. The U-shaped pipesare preliminarily fixed through the middle clamping plates, and then the upper end clamping plates and the lower end clamping plates are sequentially mounted on the U-shaped pipes, so that the U-shaped pipes are mounted and fi