Solar energy vacuum tube

The utility model is suitable for a helioplant's technical field, discloses a solar energy vacuum tube, the outer tube that includes the inner tube and have light transmission nature, outer pipe box establish including outside of tubes side, inner wall and the outer wall of inner tube of outer tube pass through seal structure fixed connection, the outer wall evenly distributed of inner tube have the protruding circle of a plurality of ring -types, distance between the cyclic annular protruding circle is the same. The utility model provides a pair of solar energy vacuum tube, it is rational in infrastructure, set up protruding ring of structure on the inner tube pipe wall for the surface area of inner tube pipe wall increases by a wide margin, thereby the area that makes the inner tube pipe wall receive exposure to the Sun also increases by a wide margin, and then has improved the solar energy utilization ratio of vacuum tube, has shortened heat time, and simultaneously, protruding ring of structure has still increased the inner tube at on the other hand and has held hydrothermal capacity, makes the rivers that flow past the vacuum tube in the unit interval increase, thereby improves whole solar water heater's water yield, the person's that does not greatly facilitate the use use.