초록 ▼

A spray dispensing device is provided which can be used with non-pressurized containers. The device includes passageways for directing streams of air and, liquid where the liquid is broken up into droplets and emitted as a fine spray through an orifice. An annular air passageway is concentrically di

A spray dispensing device is provided which can be used with non-pressurized containers. The device includes passageways for directing streams of air and, liquid where the liquid is broken up into droplets and emitted as a fine spray through an orifice. An annular air passageway is concentrically disposed around a liquid passageway, and the air is lead through air swirl passages, where the annular stream of air is given a rotary motion as the result of swirl vanes forming the air swirl passages. The velocity of air past a product passageway exit orifice also creates a Bernoulli effect which reduces pressure at that orifice, which acts to draw liquid to the spray orifice. The device may include a dip tube for the liquid which is provided with a check valve for retaining liquid at a high level in the dip tube after each spray cycle so that spraying is nearly instantaneous upon actuation. Several embodiments of reciprocating closure valves may be used to close the orifice to prevent drying withing the product passageway.

대표청구항 ▼

[ What is claimed is:] [1.] A squeeze bottle sprayer which emits a liquid-air spray, comprising:a squeezable bottle containing a volume of liquid and air above the liquid;a dip tube extending into the volume of liquid;a sprayer body including a spray orifice;a liquid passageway in communication with

[ What is claimed is:] [1.] A squeeze bottle sprayer which emits a liquid-air spray, comprising:a squeezable bottle containing a volume of liquid and air above the liquid;a dip tube extending into the volume of liquid;a sprayer body including a spray orifice;a liquid passageway in communication with the dip tube and the spray orifice;an air passageway, the air passageway communicating with an interior of the bottle containing the volume of air, the air passageway also communicating with the spray orifice; anda plurality of ribs forming the air passageway between the ribs and reducing the air passageway to the least area at the liquid orifice, thereby increasing the speed of air and lowering the effective pressure at the liquid orifice.