Trigger Dispenser Head Precompression Valve Mechanism

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Solution Overview

Problem

Existing trigger dispensers with precompression means are often complex and expensive, making them less cost-effective for mass production.

Innovation Solution

A dispensing head with precompression valve means that allows product dispensing only when a predefined threshold pressure is exceeded in the precompression chamber, maintaining a simple structure while enhancing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If precompression means are added to trigger dispensers to improve dispensing efficiency and nebulization quality, then the dispensing performance is improved, but the device complexity and manufacturing cost increase

Engineering Contradiction:

Improvedispensing efficiencyVSAvoidstructure complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines the precompression chamber, valve means, and dispensing chamber into a single integrated dispensing head assembly. The valve means are integrated directly into the precompression chamber structure, eliminating the need for separate precompression devices and reducing overall system complexity while maintaining enhanced dispensing performance.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The dispensing head is designed to perform multiple functions: it acts as both a precompression chamber and a dispensing mechanism. The valve means serve dual purposes by controlling both the precompression phase and the dispensing phase, allowing a single component to replace what would traditionally require multiple separate parts.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If precompression means are added to trigger dispensers to achieve finer nebulization, then the dispensing quality is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvenebulization qualityVSAvoidmanufacturing cost

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The dispensing head is segmented into distinct functional zones: a precompression chamber with integrated valve means and a dispensing chamber. This segmentation allows for optimized manufacturing of each zone while maintaining overall cost-effectiveness through integrated construction, reducing the need for multiple separate components that would increase assembly costs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent utilizes pressure parameter changes within the precompression chamber to achieve finer nebulization. By controlling the pressure threshold at which the valve opens, the system optimizes product atomization quality without requiring complex additional components, thereby maintaining cost-effectiveness while improving dispensing precision.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If a precompression chamber with threshold pressure control is implemented, then product dispensing efficiency is improved, but the device becomes more expensive

Engineering Contradiction:

Improveproduct dispensing efficiencyVSAvoidmanufacturing cost

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The valve means are designed to automatically open when the precompression chamber pressure exceeds a predefined threshold, eliminating the need for external control mechanisms or additional actuators. This self-regulating feature maintains dispensing efficiency while reducing manufacturing complexity and cost by relying on inherent pressure differential operation.

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 solution enables more efficient product dispensing, such as finer nebulization, while keeping the dispensing head simple and cost-effective, thus overcoming the complexity and expense issues of prior art.

Implementation Method 1

a dispensing shutter (62) consisting of a membrane (110'') having an outer face (110a'') and an inner face (110b''). The membrane, at rest, is adapted to close, from the side of the inner face, the dispensing inlet port (46) of the dispensing shank (48), adhering to the edge thereof

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

During the dispensing step, when the pressure of the product in the precompression chamber (59'') exceeds a predefined threshold value, the membrane rises and becomes detached from the edge of the dispensing inlet port (46)

Methodology Applied

Scientific EffectPressure deformation: Deformation

Implementation Method 3

The suction shutter (60'') consists of a truncated-cone annular wall (64''), adapted to be inserted on the suction shank (28) of the upper zone (22''), which is sufficiently flexible to deform due to the suction of the product

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentUS12311393B2Dispensing head for a trigger dispenser

Publication Date: 2025.05.27 GUALA DISPENSING SPA

AI summary

A dispensing head for a trigger dispenser includes a frame having a functional zone on which a frame port, a suction outlet port and a dispensing inlet port open. A valve device applied to the functional zone includes a suction shutter and a dispensing shutter that implements a precompression of products before dispensing. The valve device cooperates with a reference plane of the frame to form a precompression chamber upstream of the dispensing inlet port.