Check-Valve Lid Venting for Stable Blender Vessel Sealing
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Solution Overview
Problem
Food and beverage processing devices face issues with lid dislodgement due to pressure changes and air movement within the vessel, particularly when the food level is high, leading to unintentional opening of the lid during blending or processing.
Innovation Solution
A lid with a check-valve or one-way valve system that allows air to escape from the vessel while preventing air from entering, ensuring the lid remains securely in place during processing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid is sealed to prevent air entry during blending, then the sealing performance is improved, but pressure buildup causes the lid to dislodge
Solution Approach 1:
A check valve is introduced as an intermediary component between the sealed lid interior and the exterior environment. The valve includes a body with a valve seat and a movable valve element that selectively opens to release pressure when internal pressure exceeds external pressure, while remaining closed during normal operation to maintain sealing. This mediator allows controlled pressure equalization without compromising the overall sealed configuration.
Solution Approach 2:
The valve element is constructed from flexible material that allows it to deform under pressure differential. The flexible membrane or diaphragm seals against the valve seat under normal pressure conditions, maintaining the sealed environment. When pressure builds up during blending, the flexible element deflects to open the pressure relief passage, then returns to its sealed position when pressure equalizes.
2Stability of the object's composition
If a check valve is added to manage pressure, then lid stability is improved, but device complexity increases
Solution Approach 1:
The pressure management function is segmented from the main lid structure and implemented as a separate, modular valve assembly. The valve body, valve seat, and valve element are distinct components that can be manufactured independently and assembled into the lid. This segmentation allows for simplified manufacturing and maintenance while achieving the pressure relief function.
Solution Approach 2:
The check valve is designed as a passive, self-regulating component that automatically responds to pressure differentials without requiring external control systems. The valve element self-actuates based on the pressure differential between the sealed interior and exterior, opening when pressure exceeds the spring force or elastic restoring force, and closing when pressures equalize. This eliminates the need for motors, sensors, or control electronics.
3Stability of the object's composition
If interference fit seals and locking structures are used to prevent lid dislodgement, then lid position stability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The pressure relief function is extracted from the lid body and implemented as a separate, pre-manufactured valve assembly that can be independently produced and then integrated into the lid. This allows the valve component to be manufactured using specialized processes while the lid itself maintains its standard manufacturing procedures, thereby improving overall ease of manufacture.
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 check-valve system effectively manages air pressure changes, preventing lid dislodgement and maintaining a sealed environment during food and beverage processing, applicable to various food processing vessels with rotating blades.
Implementation Method 1
Lid with check valve for allowing air to escape from an interior of the jug
Data Source
AI summary
A lid for a food processing device with a rotating blade within a vessel has an one-way valve for allowing air to escape the vessel.