Liquid-cooled silicon controlled rectifier circuit board and water dispenser using same

The liquid-cooled silicon controlled rectifier circuit board comprises a board body, a heat dissipation block and a silicon controlled rectifier are arranged on the board body, the silicon controlled rectifier is connected with the heat dissipation block, the heat dissipation block is provided with an inner cavity, the heat dissipation block is connected with a liquid inlet pipe and a liquid outlet pipe, one end of the liquid inlet pipe is communicated with the inner cavity, and the other end of the liquid inlet pipe is communicated with the liquid outlet pipe. The other end of the liquid inlet pipe is used for being communicated with a water source, one end of the liquid outlet pipe is communicated with the inner cavity, and the other end of the liquid outlet pipe is used for being communicated with a water storage tank. The silicon controlled rectifier has the advantages that the temperature of the silicon controlled rectifier during working can be reduced, and potential safety hazards caused by overheating