Aerosol Nozzle Assembly Compression Zone Design

The nozzle assembly is divided into multiple functional segments: a nozzle body, a center post with frustoconical tip, and a compression zone with tapered sidewalls. Each segment performs a specific function in controlling the foam flow, allowing precise directional control through coordinated action of individual components rather than a single complex nozzle structure.

The invention introduces a vertical center post element extending into the nozzle chamber, adding a vertical dimension to the horizontal flow control. The frustoconical tip of the center post and the tapered sidewalls create a three-dimensional compression zone that shapes the foam flow in multiple directions simultaneously, improving directional control beyond what conventional two-dimensional nozzle openings can achieve.

The compression zone within the nozzle chamber provides localized high-pressure treatment to the foam as it passes through the tapered sidewalls and center post. This localized compression enhances air entrainment and foam formation at the critical point of discharge, improving foaming performance on non-horizontal surfaces without requiring the entire chamber body to be complex.

The invention changes the pressure parameters of the foam flow by creating a compression zone with tapered sidewalls angled at specific angles (5-30 degrees). This geometric parameter change transforms the sub-atmospheric pressure foam into a higher pressure stream that maintains better foaming characteristics on inclined and vertical surfaces.

The center post features an asymmetric frustoconical tip shape, and the compression zone has tapered sidewalls with specific angle relationships. This asymmetric geometry creates a controlled flow pattern that directs foam away from the nozzle perimeter where bearding occurs, reducing residue buildup on the dispenser surface.

The center post with frustoconical tip acts as an intermediary element between the foam source and the nozzle opening. It mediates the foam flow by compressing and shaping it in the intermediate compression zone, preventing direct contact between the foam jet and the nozzle perimeter that would cause bearding.

The compression zone with tapered sidewalls performs preliminary compression and shaping of the foam flow before it reaches the nozzle opening. This preliminary action prevents cavitation by ensuring uniform pressure distribution and smooth flow transition, eliminating the uneven dispensing that would otherwise occur at the nozzle exit.

The invention uses pneumatic principles by creating a compression zone that utilizes pressure gradients to control foam flow. The tapered sidewalls at specific angles create a controlled pressure increase that prevents cavitation and ensures uniform dispensing, applying fluid dynamics principles to stabilize the foam stream.