Venturi Liquid Pourer Prevents Spout Dripping

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Solution Overview

Problem

Existing liquid pourers fail to prevent dripping from the spout after use, as they lack a mechanism to retain liquid within the spout once dispensing is stopped.

Innovation Solution

A liquid pourer device with a venturi effect is designed, featuring an elongate base member with a constricted section and a spout, along with a flow regulating member that moves to seat in a constricted section, increasing liquid velocity and maintaining pressure to prevent dripping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional liquid pourer with uniform bore is used, then the structure is simple and easy to manufacture, but liquid continues to drip from the spout after dispensing is stopped

Engineering Contradiction:

Improveprevention of liquid drippingVSAvoidstructure of pourer device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bore is divided into three distinct sections: a first section with a first diameter, a second constricted section with a smaller second diameter, and a third section with a third diameter. This segmentation creates different flow characteristics in each section, allowing the venturi effect to prevent dripping while maintaining a manufacturable structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the diameter parameter along the length of the bore, creating a venturi shape with a constricted middle section. This parameter change generates the venturi effect where liquid velocity increases and pressure decreases in the constricted section, preventing dripping after dispensing stops.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If a flow regulating member is added to control liquid flow, then liquid dripping is prevented, but the device complexity increases

Engineering Contradiction:

Improvecontrol of liquid flowVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The flow regulating member is integrated within the spout assembly, combining the flow control function with the existing spout structure. This merging approach allows flow regulation without adding significant complexity to the overall device.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The flow regulating member is designed to be moved by the user's finger or thumb, allowing self-service flow control without requiring additional actuators or complex control mechanisms. The user's own finger serves as the actuating mechanism.

Inventive Principle:

Principle #25Self-service

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

The device effectively retains liquid in the spout after dispensing is stopped, preventing dripping and ensuring no liquid is lost when the flow regulating member shuts off the flow.

Implementation Method 1

Methodology Applied

Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentUS9061302B1Liquid pourer device with venturi effect

Publication Date: 2015.06.23 PECKELS ARGANIUS E

AI summary

A liquid pourer device with venturi effect for preventing the dripping of liquid from spout after use. The liquid pourer device with venturi effect includes an elongate base member having a bore with a main section and a constricted section and also includes a spout in communication with the elongate base member and further having a flow regulating member movably disposed in the bore.