Liquid Dosing Dispenser with Integrated Valve and Spring Mechanism
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Solution Overview
Problem
Existing liquid dispensers often release liquids continuously and unpredictably, leading to inconsistent dosing, which is disadvantageous for applications requiring precise measurements or standardized protocols.
Innovation Solution
A liquid dosing dispenser with a housing, a dispensing unit, a first valve, a closure with a second valve and a base, and a compressible resilient element, which allows for consistent and predictable liquid dispensing in a single operation by controlling the liquid flow passages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional liquid dispensers are used, then liquid can be released continuously, but the dosing consistency and predictability deteriorates
Solution Approach 1:
The patent implements periodic action through a pump mechanism that operates in distinct cycles: a downstroke phase where the pump plunger moves downward to dispense liquid, and an upstroke phase where the pump plunger returns to its initial position. This periodic motion ensures consistent dosing by delivering a predetermined volume during each downstroke, eliminating the unpredictable continuous flow of traditional dispensers while maintaining operational simplicity through automatic valve control during each cycle.
2Reliability
If multiple materials and assembly techniques are used in liquid dispensers, then functional reliability improves, but manufacturing complexity and cost increase
Solution Approach 1:
The patent applies merging by integrating multiple functional components into unified elements. The pump assembly combines the pump plunger, pump rod, and valve mechanisms into a single integrated unit. The closure assembly merges the closure element, seal, and spring into one component. This consolidation maintains reliability by preserving all necessary functions while significantly simplifying manufacturing and assembly processes, allowing the dispenser to be produced as fewer integrated parts rather than multiple separate components requiring complex assembly.
Solution Approach 2:
The patent employs homogeneity by manufacturing all dispenser components from polypropylene, a single polymer material. This includes the housing, pump assembly, closure assembly, and all internal components. Using a homogeneous material throughout the device simplifies manufacturing processes, eliminates the need for different assembly techniques required for dissimilar materials, reduces assembly complexity, and facilitates easier recycling at end-of-life, while still achieving the required functional reliability through appropriate design of the polypropylene components.
3Measurement precision
If liquid dispensers are designed with multiple components, then dosing control improves, but ease of disposal and waste treatment deteriorates
Solution Approach 1:
The patent implements homogeneity by constructing all dispenser components from polypropylene, a single recyclable polymer material. This includes the housing, integrated pump assembly, closure mechanism, and all internal parts. This homogeneous material composition maintains precise dosing control through the engineered pump and valve mechanisms while dramatically improving ease of disposal, as the entire dispenser can be treated as a single-material waste stream suitable for plastic recycling programs, eliminating the complexity of separating and treating multiple different materials.
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 dispenser achieves consistent and predictable liquid dispensing, simplifies manufacturing and assembly, and facilitates easy disposal, reducing waste and environmental impact.
Implementation Method 1
a compressible resilient element arranged in the internal space between the first valve and the second valve of the closure and configured to urge the at least one of the base and the second valve from the compressed position to the resting position
Data Source
AI summary
A liquid dosing dispenser is provided, comprising: —a housing defining an internal space comprising a first opening and a second opening; —a dispensing unit; —a first valve arranged in the housing to selectively close and open the first opening; —a closure between the first valve and the dispensing unit for closing/opening a liquid flow though the second opening, the closure comprising a second valve and a base movable in axial direction between a resting position and a compressed position; —a compressible resilient element arranged between the first and second valve; wherein the dispensing unit may move the base of the closure from the resting position to the compressed position upon application of an external actuating force and to urge the closure in axial direction from the compressed to the resting position and the second valve may move with respect to the base to open a third liquid flow passage between the first liquid flow passage and second liquid flow passage when the closure is moved from the resting position to the compressed position.