Efficient and energy-saving electric heater

The utility model relates to the technical field of electric heaters, and discloses a high-efficiency and energy-saving electric heater, which solves the problem that the use of an existing electric heater is affected due to vibration of a medium inside the electric heater, and comprises an electric heater body, and one side of the upper end of the electric heater body is connected with an inlet pipeline. According to the electric heater, when vibration is generated, vibration force is transmitted downwards through the supporting plate, so that the inner shell extrudes the damping rod downwards, meanwhile, the supporting rod drives the first buffer block to extrude the first spring downwards, the second buffer block extrudes the third spring, and the second buffer block extrudes the third spring; a second spring is stretched downwards under pulling of a first buffer block, two sliding blocks at the upper end of the interior of an inner shell slide towards the two sides, a fourth spring is compressed under str