Water circulation unit for swimming pool, has guiding region to symmetrically guide water around common axis, and convergent, where distance between ejector water outlet and convergent downstream section is preset times convergent length

摘要

The unit has a convergent with a symmetry axis merging with ejection axis of an ejector (142) to form a common axis for the unit. A distance between water outlet of the ejector and a downstream section of the convergent is preset times the length of the convergent. A guiding region located upstream of an upstream section of the convergent symmetrically guides the water around the common axis during the ejector operation. An independent claim is also included for a filtration and maintenance unit.