Back plate assembly of gas water heater with heat dissipation air duct

The back plate assembly of the gas water heater with the heat dissipation air channel comprises a back plate body, a connecting plate, a limiting plate, a double-shaft motor, a worm gear and fan blades, a supporting plate is arranged between the back plate body and the limiting plate, and an open groove is formed in the side wall of the back plate body in a penetrating mode. According to the gas water heater, the double-shaft motor, the worm, the worm gear, the fixed rod, the rotating rod and the fan blades are arranged, so that the double-shaft motor can drive the worm to drive the fan blades on the worm gear to rotate, air flow at the slotting position is accelerated, heat dissipation at a heat dissipation opening of the gas water heater can be accelerated, and temperature rise in a tank of the gas water heater can be avoided; according to the gas water heater box, the service life of components in the gas water heater box is effectively guaranteed, vibration of the gas water heater on the supporting plate