关键词：太阳能热水器；节水；无泵；压力调节吸力
摘 要：In order to solve the problem which is very common when we use a solar water heater for a shower but the hot water can not come immediately because of the cooled water remained in the pipeline, a no-pump cycling water-saving equipment is designed based on a pressure-regulated suction device, temperature acquisition control circuit and a water-saving box.The kinematics and mechanics parameters are confirmed on the result of calculation and software simulation, and are tested by doing physical experiment.It can make it come true to economize the water and energy for solar power heater.