The present invention relates to an electric water dispenser, the heater 12 is mounted in the center of the upper surface 11 of the base box 10, the outer cylinder 20 is mounted on the upper surface 11 of the base box 10, A packing mounting part 23 is formed at an inner circumference of the upper end of the outer cylinder 20, a packing 25 is mounted at the packing mounting part 23, and a hook part formed around the upper end of the inner cylinder 30 at the packing 25 ( 31 is seated, the inner cylinder 30 is disposed inside the outer cylinder 20, the lower end of the inner cylinder 30 is spaced apart from the upper surface 11 (or heater) of the base box 10, the lid 40 By simultaneously pressing this packing 25 and the hook part 31 of the inner cylinder 30, the airtightness of the outer cylinder 20 and the inner cylinder 20 is simultaneously maintained, and the pressure of the outer cylinder 20 and the inner cylinder 10 is internal pressure. It is characterized in that it is independently controlled by the adjusting device (50).
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