Accumulator Spray S Valve Structure for Lower Trigger Force
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Solution Overview
Problem
Existing accumulator sprays require a strong pulling force for the trigger portion, making them difficult for elderly people and children to use effectively.
Innovation Solution
The S valve structure is designed with a spring portion arranged on the upper side and a valve piston portion drooping from the spring, featuring an inverted dome shape, integrated with a core rod and skirt portions, allowing for uniform abutment and stable operation, and incorporating a center hole for elasticity and material efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the diameter of the cylinder portion is made small to reduce the pulling force of the trigger portion, then the pulling force is reduced, but the length of the cylinder portion has to be extended which consumes the installation area of the S valve
Solution Approach 1:
The patent repositions the S valve from a horizontal arrangement to a vertical arrangement above the piston. The spring portion is arranged on the upper side with the valve piston portion drooping downward, utilizing the vertical dimension to accommodate the S valve in the limited space without extending the cylinder length excessively.
Solution Approach 2:
The valve piston portion is positioned within the cylinder portion, and the spring portion is arranged above it in a nested configuration. The inner skirt portion of the valve piston fits within the cylinder, while the outer skirt portion extends outward, efficiently utilizing the available space.
2Force
If the diameter of the cylinder portion is made small to reduce the pulling force, then the pulling force is reduced, but the ejection capacity is compromised
Solution Approach 1:
The patent employs a dynamic valve opening mechanism where the valve piston portion moves upward when fluid pressure exceeds the spring force, suddenly opening the S valve to release accumulated fluid pressure and eject liquid at high speed. This dynamic action compensates for the smaller cylinder diameter by maximizing ejection velocity.
Solution Approach 2:
The accumulator spray operates in periodic cycles: liquid is accumulated in the cylinder during the filling phase, then suddenly ejected during the discharge phase when the S valve opens. This periodic accumulation and sudden release maintains ejection capacity despite the smaller cylinder diameter.
3Productivity
If the cylinder portion is extended to maintain ejection capacity, then the ejection capacity is maintained, but the installation space of the S valve and spring cannot be ensured
Solution Approach 1:
The S valve assembly is positioned vertically above the piston in the limited space behind the cylinder portion, utilizing the vertical dimension rather than extending the cylinder length horizontally. The spring portion is arranged on the upper side with the valve drooping downward, fitting within the available vertical space.
Solution Approach 2:
The S valve is segmented into distinct components: the spring portion, the valve piston portion with core rod and skirt portions, and the valve seat. This segmentation allows each component to be optimized for its function while fitting efficiently within the constrained installation space.
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 reduces the pulling force required, ensures stable operation, allows for easy use by individuals with low grip strength, and maintains ejection capacity while optimizing space utilization.
Implementation Method 1
the valve body of the S valve is pressurized to the valve seat via the spring force of a relatively strong spring
Implementation Method 2
the spring portion 1 is in an inverted dome shape... allows for uniform abutment and stable operation
Implementation Method 3
when the fluid pressure inside the cylinder exceeds this spring force, the valve body and the valve seat of the S valve are suddenly opened
Data Source
AI summary
[Summary][Object] To provide an S valve structure to be incorporated in an accumulator spray with a reduced pulling force of a trigger portion E.[Solution] The present invention is directed to an S valve structure A in an accumulator spray to be attached to a container to suction liquid in the container from an introduction tube H via an F valve into a main cylinder portion, apply pressure to the liquid in the main cylinder and, when the pressure exceeds a certain pressure, eject the liquid via an S valve structure A from a nozzle portion F whereinthe S valve structure A is formed of a spring portion 1 and a valve piston portion 2 drooping from the spring portion 1, and the valve piston portion 2 includes a core rod portion 21, an outer skirt portion 22 extending downward from an outer circumference of the core rod portion 21 and an inner skirt portion 23 longer than the outer skirt portion 22.