[0002] At present, a multi-functional faucet is obtained by using (220V)
mains electricity to directly act on
tap water through a
graphite electrode resistant to
electrochemical corrosion. It has the multi-functions of "instant heating, magnetization, and sterilization". Dry burning", due to the inherent characteristics of "magnetization" and low
surface energy of graphite, scale induration is simulated. As a "multifunctional faucet", it has unique advantages. Its core device is a pair or a group of electrodes. The patent "a "Multi-functional faucet" (patent number: ZL201220226509.4) provides such a core device. In this patent, a group of electrodes are fixed at a certain distance in an insulated and vertically placed container with a closed top, and a "cross" is formed between the electrodes. Groove"
water channel, the spacing of "cross groove" is 2-6mm, and a "vertical lift exhaust port" is set in the middle of "cross groove", and the "vertical lift exhaust port" can be changed by changing the upper part of the container" The size of the "
air chamber" is used to change the "draft" area of the electrode, thereby adjusting the size of the power to adapt to different water qualities. However, it has such problems. First, the "core device" must be used "vertically", otherwise the power adjustment method It will not be effective, which makes its structure have greater limitations. Furthermore, for the
heating power of the "core device", the
hardness of the water, the relative
projected area of the electrodes and the load per unit
projected area are proportional to the
heating power. Proportional, the electrode spacing is inversely proportional to the
heating power, among them, for the "multifunctional faucet", the "water hardness" in nature is from 40-800mg / L (in terms of COCa 3 Count) is an uncontrollable variable, and the "load per unit area" should also be regarded as an uncontrollable variable, especially for graphite electrodes. Practice shows that a reasonable unit area load should not be greater than 160W / cm 2 , Excessive surface load will affect the service life of the electrode, (surface load 200W / cm 2 When using continuously for 10 hours, the electrode loss exceeds 1%) The other two adjustable variables are "electrode spacing" and "relative
projected area". The "core device" of the patent (patent number: ZL201220226509.4) is Under the condition of fixing the "electrode spacing" (2-6mm), the method of adjusting the "relative projected area" can adapt to different water qualities. The
disadvantage of this method is that (the heating power of the "instant faucet" is 3.4kW Example) If the "electrode distance" is set to 2mm with 40mg / L softer
water quality to obtain 3.4kW power, when it corresponds to harder
water quality (800mg / L), the "unit area load" when the power is adjusted to 3.4kW will be It will increase nearly 20 times, which will cause serious wear of the electrodes. If the "electrode distance" is set to 6mm for 800mg / L
hard water, the power will be 3.4kW. When it corresponds to
soft water (40mg / L), the power will be When it is adjusted to 3.4kW, the "relative projected area" will increase nearly 20 times, making the volume huge and causing the adjustment mechanism to be cumbersome. Based on
hard water quality, it must adapt to the
water quality of large-span changes at the same time, which will bring about the disadvantages of bulky and cumbersome adjustment mechanism or shorten the service life of the electrode.