Pouring Nozzle Guide Surface for Low-Foam Carbonated Beverage Flow
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Solution Overview
Problem
Existing beverage servers struggle to pour carbonated beverages while suppressing foaming and maintaining a high gas volume (GV) value.
Innovation Solution
The beverage server incorporates a pouring nozzle with a cylindrical member and a guide surface that guides the carbonated beverage, featuring a moderate tilt from an upper end to a lower end, allowing the beverage to flow smoothly and spread radially or in a fan shape, with optional grooves to control the flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional pouring nozzle is used, then the carbonated beverage can be poured quickly, but foaming occurs and GV value decreases
Solution Approach 1:
The guide surface is designed with varying tilt angles along the flow direction, creating different local flow conditions in different regions. The upper portion has a gentler tilt to reduce initial turbulence, while the lower portion increases tilt to control final discharge, thereby maintaining GV while enabling efficient pouring.
Solution Approach 2:
The guide surface employs curved and inclined surfaces instead of flat planes, allowing the beverage to flow along smooth transitions. This curvature reduces sudden direction changes and turbulence, suppressing foaming while maintaining pouring efficiency.
2Productivity
If the pouring nozzle creates strong flow to pour quickly, then productivity increases, but turbulence causes foaming and GV loss
Solution Approach 1:
The guide surface is positioned and angled to counteract turbulence before it fully develops. By pre-conditioning the flow with controlled inclination angles, the system prevents the formation of harmful turbulence and foaming that would otherwise occur during rapid pouring.
Solution Approach 2:
The tilt angle of the guide surface is optimized to specific ranges (e.g., 10-30 degrees in upper portions, 30-60 degrees in lower portions) to balance flow velocity and turbulence control. These parameter changes enable fast pouring while keeping foaming minimal.
3Speed
If the guide surface has steep tilt to increase flow speed, then pouring efficiency improves, but turbulence increases causing more foaming
Solution Approach 1:
The guide surface is divided into multiple sections with different tilt angles. The upper section uses gentler slopes to accelerate flow gradually, while the lower section uses steeper slopes to increase speed closer to discharge. This segmentation allows speed optimization without excessive turbulence in any single region.
Solution Approach 2:
The guide surface design creates a dynamic flow condition where the beverage accelerates progressively as it moves through the nozzle. The varying tilt angles adapt to different positions in the flow path, optimizing speed at each stage while controlling turbulence generation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively suppresses foaming and maintains a high GV value, with some configurations achieving a GV above 5.0 and up to 5.4 after pouring.
Implementation Method 1
the carbonated beverage runs down inside the cylindrical member while being guided by the guide surface
Data Source
AI summary
A beverage server configured to pour a carbonated beverage to a beverage container, includes a supply source configured to supply the carbonated beverage; and a pouring nozzle configured to pour the carbonated beverage supplied from the supply source to the beverage container, wherein the pouring nozzle includes a cylindrical member, and a guide including a guide surface whose one portion is arranged inside the cylindrical member and whose another portion projects to a lower side of the cylindrical member, the carbonated beverage runs down inside the cylindrical member while being guided by the guide surface, and the guide surface includes an upper end and a lower end and is formed such that a tilt becomes moderate from a position between the upper end and the lower end to the lower end.