Electric heater capable of heating uniformly

The utility model discloses an electric heater capable of heating uniformly, which comprises an electric heater shell, support legs symmetrically welded at the bottom of the electric heater shell, an air inlet pipe communicated and connected with an air inlet end of the electric heater shell, and an air outlet pipe communicated and connected with an air outlet end of the electric heater shell, damping seats are symmetrically installed on the surface of the electric heater shell, the electric heater shell is sleeved with a heat preservation assembly, and heat insulation assemblies are symmetrically installed on the outer side of the electric heater shell. The heat preservation assembly comprises a heat preservation cylinder arranged outside the electric heater shell in a sleeving mode, a protection ring A fixedly connected to the opening position of one end of the heat preservation cylinder, and a protection ring B fixedly connected to the opening position of the other end of the heat preservation cylinder. Un