Electric water heater power conversion and startup and shutdown control device and quick-heating type electric water heater

The utility model discloses an electric water heater power conversion and on-off control device and a quick heating type electric water heater, the device comprises a water pressure driving mechanism and a power conversion and on-off control mechanism, the water pressure driving mechanism comprises a shell, a diaphragm, a driving piece and two touch pieces, the driving piece respectively drives the two touch pieces through two driving springs, and the diaphragm is arranged in the shell. Each touch piece is provided with a limiting part and a touch part; the control mechanism comprises a mounting seat, a switching rotating shaft, a signal microswitch and two power microswitches, one end of the switching rotating shaft extends outwards in the axial direction to form a plurality of driving convex strips, the switching rotating shaft is rotated to a set position, the water heater enters a shutdown state from a working state, a contact of the signal microswitch acts, and the power microswitch is switched on. A con