Fluid Intake Assembly with Valve for Sprayer Air Prevention
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Solution Overview
Problem
Air within the fluid flow in airless fluid spraying systems causes sputtering or spitting of paint material and uneven spray from the output nozzle, which is undesirable for users.
Innovation Solution
A fluid intake assembly with a suction tube assembly that extends into a paint container, featuring a valve mechanism to prevent air from entering the inlet fluid path and a flexible tube design that maintains the inlet end within the fluid, even when the container is tilted, ensuring continuous fluid flow without air interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a suction tube assembly extends into a paint container to provide paint material, then fluid supply is enabled, but air can enter the fluid flow causing sputtering and uneven spray
Solution Approach 1:
A valve mechanism is introduced as an intermediary component between the suction tube and the fluid flow path. This valve acts as a mediator that selectively permits fluid passage while blocking air entry, thereby resolving the contradiction between maintaining fluid supply and preventing air contamination in the spray system.
Solution Approach 2:
The valve mechanism creates an inert or controlled environment within the fluid path by preventing air from entering the suction tube and fluid flow. This ensures that only the intended fluid material moves through the system without air bubbles, eliminating sputtering and maintaining consistent spray quality.
2Ease of operation
If the container is tilted during refilling, then accessibility is improved, but the inlet end may exit the fluid causing air to enter
Solution Approach 1:
The suction tube assembly is designed with dynamic positioning capabilities, allowing the inlet end to maintain its position within the fluid even when the container is tilted. This dynamic adaptation ensures continuous fluid contact and prevents air entry, resolving the contradiction between ease of refilling and reliability of fluid flow.
Solution Approach 2:
The valve mechanism is pre-configured to close or seal the fluid path when air is detected or when the container is in a tilted position during refilling. This preliminary action prevents air from entering the system before it can contaminate the fluid flow, maintaining reliability while allowing operational flexibility.
3Object-affected harmful factors
If a valve mechanism is added to prevent air entry, then spray quality is improved, but device complexity increases
Solution Approach 1:
The valve mechanism is merged with the existing suction tube assembly and integrated into the fluid intake structure. By combining the valve function with the existing components rather than adding a completely separate system, the patent achieves air prevention while minimizing the increase in device complexity.
Solution Approach 2:
The valve mechanism is designed to perform multiple functions: preventing air entry, controlling fluid flow, and potentially sealing the system during refilling. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving comprehensive air prevention.
Data Source
AI summary
In one example, a fluid intake assembly configured to provide an inlet fluid path for a fluid sprayer is provided. The assembly includes a fluid intake assembly body configured to be removably engaged to a portion of the fluid sprayer by rotating the body with respect to the portion of the fluid sprayer. The assembly also includes a fluid inlet tube configured to be supported by the body and extend from the body within a fluid container to provide fluid flow along the inlet fluid path.