Swirl discharge opening for ventilating of rooms has entirety of through-passages forming especially square area conforming to front opening, and this area conforms approximately to whole area of front opening

摘要

The swirl discharge opening for the ventilating of rooms has an air feed connector and an especially square front opening (1) forming an outlet opening in which are provided several radially extending through-passages (2) and radially extending swirl vanes (3). The entirety of the through-passages forms an especially square area conforming to the front opening, and this area conforms approximately to the whole area of the front opening.