Spray head for a squeeze bottle

1. A nebulising dispenser head ( 1 ; 100 ) for a bottle that is elastically deformable by squeezing, comprising:

liquid channel ( 4 ) with first and second ends,

the liquid channel connected at the first end to a suction tube ( 6 ) which draws a liquid contained within the bottle ( 2 ) from under a volume of air, and the liquid channel terminating, at the second end, with a liquid nozzle ( 7 ) disposed in a mixing chamber ( 70 ), the mixing chamber defined by a terminal element facing said nozzle;

an orifice ( 31 ) for discharging the liquid outwards from the mixing chamber; and

an air channel ( 5 ) communicating with said volume of air of the bottle ( 2 ), the air channel ( 5 ) surrounding the liquid channel ( 4 ) and merging into said mixing chamber ( 70 ) wherein,

said liquid channel ( 4 ) and said air channel ( 5 ) are formed in a block ( 10 ) of said dispenser head ( 1 ; 100 ) as a ribbed tubular segment ( 40 ) externally ribbed with ribs ( 42 ),

said air channel ( 5 ) comprises a wall ( 50 ) surrounding said liquid channel ( 4 ),

said wall ( 50 ) defines a tubular compartment ( 51 ) substantially coaxial to said ribbed tubular segment ( 40 ), thereby forming a ribbed tubular compartment,

said wall ( 50 ) includes an opening ( 52 ) for communication with said volume of air of the bottle ( 2 ),

said terminal element includes an ejection tip ( 3 ) with a tubular element ( 30 ) having a cavity shaped to axially narrow outwards in said discharge orifice ( 31 ) and terminate with a diverging segment ( 32 ),

said ejection tip ( 3 ) is inserted with a proximal portion thereof into said ribbed tubular compartment ( 51 ) thereby defining said mixing chamber ( 70 ),

said ejection tip includes a sleeve ( 33 ) externally coaxial to said tubular element ( 30 ) and integrally provided with an abutment ( 34 ) defining a depth of insertion of the ejection tip into said ribbed tubular compartment ( 51 ) of the block ( 10 ), and

said ejection tip further includes a sealing door ( 8 ) integrally hinged at a distal part ( 35 ) of said sleeve ( 33 ), the sealing door ( 8 ) being rotatable by 180° from an open position to a closed position of said discharge orifice ( 31 ).

2. A dispenser head ( 1 ; 100 ) as claimed in claim 1 , further comprising:

a slit in the block formed externally to said ribbed tubular compartment ( 10 ), wherein,

the ejection tip ( 3 ) has a centering element,

the centering element being a plate ( 36 ) projecting from said sleeve ( 33 ) and being insertable into said slit.

3. A dispenser head ( 1 ; 100 ) as claimed in claim 1 , wherein,

said ejection tip ( 3 ) has a cylindrical distal end ( 37 ) in correspondence with the diverging segment ( 32 ) of the discharge orifice ( 31 ), the distal end ( 37 ) comprising an abutment step ( 38 ), and

said sealing door ( 8 ) has a face ( 80 ), a sealing ring ( 81 ) and, coaxially internal with the sealing ring, a projecting pivot ( 82 ),

wherein when the sealing door ( 8 ) is rotated to the closed position, the face ( 80 ) engages with the ejection tip, the sealing ring ( 81 ) abuts against the abutment step ( 38 ), and the projecting pivot ( 82 ) enters said diverging segment ( 32 ) of the discharge orifice ( 31 ) to lock the sealing door ( 8 ) in the closed position.

4. A dispenser head ( 1 ; 100 ) as claimed in claim 1 , wherein,

said wall ( 50 ) surrounding the liquid channel ( 4 ) has, on a surface oriented towards the tubular segment ( 40 ) of the liquid channel ( 4 ), undercut portions ( 53 ), and

said tubular element ( 30 ) of the ejection tip ( 3 ) has an outer surface with corresponding projections ( 39 ), in use, engaging said undercut portions ( 53 ).

5. A dispenser head ( 1 ) as claimed in claim 1 , further comprising:

a snap-on tubular portion for snap-on connection ( 12 ),

the snap-on tubular portion internally shaped with circumferentially equidistant protrusions ( 13 ) able to engage a peripheral projection ( 20 ) of a neck of the bottle ( 2 ).

6. A dispenser head ( 100 ) as claimed in claim 1 , further comprising:

a gasket ( 130 ); and

a separate collar ( 120 ) internally threaded to be screwed, with interposition of the gasket ( 130 ), onto a bottle neck with a matching thread.

7. A nebulising dispenser head for use with a bottle containing a liquid and a volume of air, comprising:

a liquid channel ( 4 ) with first and second ends;

a suction tube ( 6 ) connected to the first end, in use the suction tube ( 6 ) to draw the liquid contained within the bottle ( 2 ) from under the volume of air;

a liquid nozzle with a mixing chamber ( 70 ) connected to the second end;

a terminal element facing said nozzle;

an orifice ( 31 ), in use discharging the liquid outwards from the mixing chamber;

an air channel ( 5 ) communicating with said volume of air of the bottle ( 2 ), the air channel ( 5 ) surrounding the liquid channel ( 4 ),

said liquid channel ( 4 ) being formed as an externally ribbed tubular segment ( 40 ),

said air channel comprising a wall ( 50 ) surrounding said liquid channel ( 4 ),

said wall ( 50 ) defining a tubular compartment ( 51 ) substantially coaxial to said ribbed tubular segment ( 40 ), thereby forming a ribbed tubular compartment,

said wall ( 50 ) having an opening ( 52 ), in use, for communication with said volume of air of the bottle ( 2 ),

said terminal element including an ejection tip ( 3 ) with a tubular element ( 30 ) having a cavity axially narrowing outwards in said discharge orifice ( 31 ) and terminating with a diverging segment ( 32 ),

said ejection tip ( 3 ) inserted with a proximal portion into said ribbed tubular compartment ( 51 ),

said ejection tip including a sleeve ( 33 ) externally coaxial to said tubular element ( 30 ) and integrally provided with an abutment ( 34 ) defining depth of insertion of the ejection tip into said ribbed tubular compartment ( 51 ), and

said ejection tip further including a sealing door ( 8 ) integrally hinged at a distal part ( 35 ) of said sleeve ( 33 ), the sealing door ( 8 ) being rotatable from an open position to a closed position of said discharge orifice ( 31 ).

8. A dispenser head as claimed in claim 7 , wherein,

the ejection tip ( 3 ) comprises a centering element,

the centering element is a plate ( 36 ) projecting from said sleeve ( 33 ).

9. A dispenser head as claimed in claim 7 , wherein,

said ejection tip ( 3 ) has a cylindrical distal end ( 37 ) in correspondence with the diverging segment ( 32 ) of the discharge orifice ( 31 ),

the distal end ( 37 ) comprises an abutment step ( 38 ),

said sealing door ( 8 ) has a face ( 80 ) engaging with the ejection tip ( 3 ), a sealing ring ( 81 ) and, coaxially internal with the sealing ring, a projecting pivot ( 82 ),

the projecting pivot ( 82 ) enters said diverging segment ( 32 ) of the discharge orifice ( 31 ) to lock the sealing door ( 8 ) in the closed position.

10. A dispenser head as claimed in claim 7 , wherein,

said wall ( 50 ) surrounding the liquid channel ( 4 ) has undercut portions ( 53 ) on a surface oriented towards the tubular segment ( 40 ) of the liquid channel ( 4 ), and

said tubular element ( 30 ) of the ejection tip ( 3 ) has an outer surface with corresponding projections ( 39 ), in use, said corresponding projections ( 39 ) engaging said undercut portions ( 53 ).

11. A dispenser head as claimed in claim 7 , further comprising:

a snap-on tubular portion for snap-on connection ( 12 ),

the snap-on tubular portion internally shaped with circumferentially equidistant protrusions ( 13 ), in use, to engage a peripheral projection ( 20 ) of a neck of the bottle ( 2 ).

12. A dispenser head as claimed in claim 7 , further comprising:

a gasket ( 130 ); and

a collar ( 120 ) internally threaded to be screwed, with interposition of the gasket ( 130 ), onto a bottle neck with a matching thread.