Mechanical Constant Pressure Valve for Over-Inflation Control
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Solution Overview
Problem
Existing inflatable products rely on unreliable empirical monitoring or costly pressure sensors to prevent over-inflation, which can damage the product.
Innovation Solution
A constant pressure valve with a housing, sealing seats, and an actuating assembly that automatically regulates airflow to maintain a predetermined pressure within inflatable products, eliminating the need for manual monitoring or sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is used to monitor air pressure inside the inflatable product, then the reliability of pressure monitoring is improved, but the cost of the inflatable product increases
Solution Approach 1:
The patent replaces electronic pressure sensors with a purely mechanical constant pressure valve system. The valve uses a pressure-bearing plate, elastic member, and valve head assembly that automatically responds to pressure changes through mechanical force balance, eliminating the need for electronic sensors while maintaining reliable pressure control and reducing product cost
Solution Approach 2:
The constant pressure valve is designed to automatically monitor and regulate air pressure without external control systems. The mechanical components self-adjust based on pressure differential forces, with the valve head automatically opening or closing the airflow channel in response to pressure changes, providing reliable self-regulating pressure control
2Device complexity
If empirical monitoring is used to monitor air pressure inside the inflatable product, then the cost of the inflatable product is reduced, but the reliability of pressure monitoring deteriorates
Solution Approach 1:
The patent replaces unreliable empirical monitoring (visual estimation or manual pressure gauges) with an automated mechanical constant pressure valve system that provides accurate, real-time pressure control through force balance mechanisms, significantly improving monitoring reliability while keeping costs low
Solution Approach 2:
The constant pressure valve incorporates automatic feedback control through its mechanical design. The pressure-bearing plate continuously senses pressure differential forces and automatically adjusts the valve head position to maintain constant pressure, creating a closed-loop control system without electronics that ensures reliable pressure monitoring
3Device complexity
If manual monitoring is used to prevent over-inflation, then the cost of the inflatable product is reduced, but the productivity of inflation process deteriorates
Solution Approach 1:
The constant pressure valve performs automatic pressure regulation during inflation, eliminating the need for manual monitoring and intervention. The mechanical system self-adjusts the airflow channel opening based on real-time pressure feedback, enabling continuous automated inflation operation that improves process efficiency while keeping the device simple and cost-effective
Solution Approach 2:
The valve implements automatic feedback control where the pressure-bearing plate senses internal pressure and continuously adjusts the valve head position to maintain constant pressure. This automated feedback mechanism eliminates manual monitoring requirements and enables efficient, uninterrupted inflation processes
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 valve ensures reliable and cost-effective inflation control by automatically engaging or disengaging to maintain the desired pressure, preventing over-inflation and enhancing product durability.
Implementation Method 1
a first elastic member connected to the second side of the first pressure-bearing plate... a second elastic member connected to the second side of the second pressure-bearing plate
Data Source
AI summary
A constant pressure valve for an inflatable product is provided. The constant pressure valve comprises: a housing defining an airflow channel within. A first sealing seat is disposed in the airflow channel and a first through hole is formed in the first sealing seat. An inflation valve core comprises: a first actuating assembly and a first valve head. The first actuating assembly is configured to drive the first valve head to disengage from the first through hole, or to engage with the first through hole in a sealing manner. The constant pressure valve is switchable between an inflation state, in which the first valve head is disengaged from the first through hole, and the airflow channel is unblocked; and a cut-off state in which the first valve head is engaged with the first through hole in a sealing manner, and the airflow channel is blocked by the first valve head.