Concealed flow regulator

A concealed flow regulator for attaching to a water supply opening that provides a water flow and that is disposed with threads, the concealed flow regulator comprising:

• a housing portion that is connected to the water supply opening and forms an air flow clearance in communication with an inner wall of the water supply opening that communicates with exterior air, that has an external revolution surface disposed with external threads for connection to the threads of the water supply opening, and in which is defined a mutation cavity and a suction passage in communication with the mutation cavity, the suction passage having an external port disposed in the external revolution surface of the housing portion in communication with the air flow clearance and an internal port that connects an interior portion of the mutation cavity with the exterior air;
• a water diversion device that is assembled within the housing portion, that comprises a central base;
• a deflecting annular wall extending from the central base;
• and a periphery wall extending from the deflecting annular wall and being provided with diversion holes, that divides the water flow, and through which the water flow flows into the mutation cavity and generates a negative pressure which sucks in exterior air via the air flow clearance and the suction passage that mixes with the divided water flow to produce bubble water:
• an annular seat having an internal hole having a hole wall;
• and
• an elastic water stop ring supported on the annular seat,
• wherein the annular seat, the water diversion device and the housing portion are assembled together,
• wherein the water diversion device further comprises:
• the central base disposed within the periphery wall and having at least a part that extends out of the internal hole of the annular seat;
• and
• the deflecting annular wall fixedly connecting the periphery wall and the central base and having an external peripheral surface that becomes gradually radially larger downwardly from the central base to the periphery wall,
• wherein a water flow clearance is formed between the central base and the hole wall of the internal hole of the annular seat, the water flow clearance is disposed above the deflecting annular wall to make water directly flow to the deflecting annular wall through the water flow clearance, and
• wherein the elastic water stop ring surrounds and fits to the central base so that a flowing area of the water flow clearance is adjusted by water pressure so as to save water.