Rotary spray nozzles

A rotary spray nozzle, comprising:

• a housing defining an internal chamber;
• an inlet channel at a first end of the housing, the inlet channel configured to deliver fluid to the internal chamber;
• a discharge channel at a second end of the housing opposite the first end, the discharge channel configured to discharge the fluid from the nozzle;
• and
• a rotor arranged within the internal chamber, the rotor comprising:
• a rotor body comprising an inlet end, an outlet end, and an internal flow channel extending therebetween for transmitting the fluid through the rotor body;
• a cup-shaped external channel concentrically arranged about a longitudinal axis of an external surface of the rotor body, the external channel comprising an open end for receiving the fluid and a closed end for temporarily retaining the fluid;
• a spherical region arranged distal to the external channel and concentrically arranged about the longitudinal axis of the external surface;
• and
• a rotor skirt arranged distal to the spherical region and concentrically arranged about the longitudinal axis of the external surface,
• wherein as the fluid enters the inlet channel and is discharged against a surface of the internal chamber, the fluid causes the rotor to spin and exerts force against the external surface of the rotor body as the fluid enters and is retained in the external channel and as the fluid contacts the rotor skirt, such that a rotor outlet at the outlet end is forced into and seals against a rotor seat of the housing, as the spherical region contacts the surface of the internal chamber to provide frictional resistance to the rotor, whereby the fluid from the rotor outlet is discharged from the discharge channel and assumes a generally continuous stream defining a circular spray pattern.

A rotary spray nozzle, comprising:

• a housing constructed of two housing members each formed of a polymeric material, the two housing members defining an external surface at an exterior of the nozzle and an internal surface, wherein the internal surfaces of the two housing members define an internal chamber;
• an inlet member coupled to an inlet channel defined in a first housing member of the two housing members, the inlet member configured to deliver fluid to the internal chamber;
• a discharge channel defined in a second housing member of the two housing members, the discharge channel configured to discharge the fluid from the nozzle;
• a rotor arranged within the internal chamber, the rotor comprising a rotor body defined by an inlet end, a contact portion and an outlet end, wherein the contact portion is configured to frictionally engage a contact region of the internal chamber as the outlet end resides within a rotor seat of the second housing member at the discharge channel, the rotor body comprising a rotor flow channel defined by a rotor inlet, a rotor lumen and a rotor outlet,
• wherein as the fluid enters the inlet member and is discharged tangentially against a surface of the internal chamber, the fluid causes the rotor to spin, and the contact portion and the contact region provide frictional resistance to the rotor such that the fluid discharged from the rotor outlet assumes a generally continuous stream defining a circular spray pattern.