The invention discloses a
water circulation method used in a laboratory circulation-water-type water distiller. According to the method, water in a
condensed water storing device is delivered to a
condensed water pipe; when a condensing cover is cooled by using the
condensed water, the water is delivered to a heat dissipating device; after a heat dissipating process, the water is delivered back to the condensed water storing device. Water amount in a distilling tank is supplemented by the water in the condensed water storing device through a water supplying
pipe. Water in the distilling tank is heated into steam, and is delivered into a steam guidance sleeve
pipe; the steam is pre-cooled during a lifting process, and flows from an upper port of the steam guidance sleeve pipe. With a curved flow guide plate, the steam is diffused into a
cooling chamber, and the heat is transferred to cooling water in the condensed
water pipe through condensing sheets. The steam is condensed into water, and flows from a
distilled water outlet. The
water level is detected by using a liquidometer. When the
water level is lower than a
lower limit, a
water level adjusting valve is opened, and water is supplemented to the condensed water storing device. According to the invention, a condensed
water circulation and utilization method is adopted, such that water resource is saved; water is supplied to the distilling tank, such that automatic
continuous operation is realized; with the curved flow guide plate and the condensing sheets in a condensing device, condensing efficiency is improved, the heat exchange efficiency is high, and a unit time yield is high.