Spiral jet fluid mixer

The apparatus for mixing fluids comprising:

• an axially elongated housing having an axis, a first upstream inlet end and a second downstream discharge end;
• a primary inlet means at the inlet end for injecting a primary fluid into the housing along the axis of the housing in the direction of the discharge end;
• secondary inlet means for fluid communication of a secondary fluid into the housing;
• said primary inlet means comprising an inlet nozzle aligned with the housing axis;
• the axially elongated housing including a section radially divergent, in the direction of fluid flow, adjacent to and downstream of the primary inlet means and a section radially convergent, in the direction of the fluid flow, adjacent to and downstream of the radially divergent section;
• said secondary inlet means disposed in said radially divergent section downstream of said inlet nozzle;
• the secondary inlet means comprising a plurality of passageways located in the said radially divergent section and located circumferentially therein;
• the plurality of passageways having passageway axes which are oriented at an acute angle to the elongated housing axis;
• the passageway axes of the plurality of passageways being curved transversely to the elongated housing axis;
• whereby said secondary inlet means is so oriented in relation to the primary inlet means that the resultant flow of primary and secondary fluids within the housing is spiralling and turbulent.

An apparatus for mixing fluids comprising:

• an axially elongated housing, having an interior, an axis, a first upstream inlet end and a second downstream discharge end, disposed in an environment including a secondary fluid;
• a primary inlet means at the inlet end for injecting a primary fluid into the housing in the direction of the discharge end;
• secondary inlet means for fluid communication of the secondary fluid with the interior of the housing;
• the axially elongated housing including a section radially divergent, in the direction of fluid flow, adjacent to and downstream of the primary inlet means and a section radially convergent, in the direction of fluid flow, adjacent to and downstream of the radially divergent section;
• the secondary inlet means comprising a plurality of uniform, circumferentially spaced passageways located in the said radially divergent section;
• said passageways having axes oriented at an acute angle to the housing axis;
• the axes of said passageways are curved transversely to the housing axis;
• the primary inlet means includes an inlet chamber for removable insertion of an inlet nozzle, the said inlet nozzle containing a relatively reduced-area outlet end, said inlet nozzle retained in said inlet chamber by an abutting end of a pipe threadably engaged with a threading provided in said inlet chamber;
• the reduced-area outlet end of the inlet nozzle providing relatively high velocity of flow of the primary fluid;
• and
• the relatively high velocity of the primary fluid in relation to the secondary fluid creating a pressure differential within the housing thereby inducing flow of the secondary fluid into the housing.