Air Pump External Pressure Relief Valve Design
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Solution Overview
Problem
Conventional air pumps with solenoid and check valves often lead to excessive inflation of objects, as they lack effective pressure control mechanisms to adjust airflow pressure according to the specific requirements of different inflatables.
Innovation Solution
An air pump design featuring an external pressure relief valve with a pressure relief channel extending to the sidewall surface of the flow passage base, equipped with a pressure relief assembly that includes a movable member and a fixed member with an elastic member, allowing for adjustable airflow discharge to prevent over-inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If a combined solenoid valve and back pressure valve are used to control airflow, then the air pump volume is reduced and assembly space is optimized, but the ability to adjust outlet pressure for different inflatables is lost
Solution Approach 1:
The pressure relief function is extracted from the internal valve assembly and implemented as an external pressure relief valve. The pressure relief channel extends to the sidewall surface, allowing the pressure relief assembly to be mounted externally on the air pump body, separate from the flow passage base where the solenoid and back pressure valves are located.
Solution Approach 2:
The pressure relief assembly is designed with a movable member that can be adjusted to different positions, enabling the same device to serve multiple inflated objects with different pressure requirements. The elastic member allows the valve to respond to different pressure levels, providing universal adaptability across various applications.
2Device complexity
If no pressure relief mechanism is provided, then the air pump structure remains simple, but excessive saturation of inflated objects cannot be prevented
Solution Approach 1:
The pressure relief assembly acts as an intermediary safety mechanism between the airflow generation system and the inflated object. It includes a movable member that responds to pressure changes and an elastic member that provides the counterbalancing force, creating a mechanical intermediary that automatically regulates pressure without requiring complex electronic controls.
Solution Approach 2:
The pressure relief mechanism is designed to automatically activate when the set pressure is reached. The elastic member stores energy during inflation and automatically triggers the pressure relief function when the threshold is exceeded, making the system self-regulating without requiring external intervention or complex control systems.
3Ease of operation
If the pressure relief channel is extended to the sidewall surface with a mounting hole, then assembly personnel can conveniently adjust pressure during assembly, but the flow passage base structure becomes more complex
Solution Approach 1:
The pressure relief channel is segmented into different sections with varying inner diameters: an arrangement section, a movable section, and a mounting section. This segmentation allows the channel to accommodate the movable member while extending to the sidewall surface for external access, balancing structural integrity with operational convenience.
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
Enables convenient pressure adjustment of the air pump to match the requirements of various inflatables, preventing excessive inflation and ensuring safe operation by allowing airflow to be discharged externally when pressure exceeds a set limit.
Implementation Method 1
based on the elastic member subjected to a pressure change in the pressure relief channel, the movable member includes a closed position for closing the arrangement section, and a pressure relief position for discharging an airflow
Data Source
AI summary
An air pump with an external pressure release valve includes an air pump body, a flow channel seat and at least one air valve. The air pump body comprises a driving motor and at least one air bag group for generating air flow. The flow channel seat includes an airflow channel and a pressure release channel communicated with the airflow channel and extending to any side wall surface of the flow channel seat. The side wall surface includes an installation hole of an outlet of the pressure release channel. The installation hole includes a pressure release assembly arranged inside the pressure release channel. Because the air pump includes the pressure release channel, and the pressure release channel extends to any side wall surface, the air pump is respectively connected with different objects to be inflated, meanwhile, an assembler can more easily adjust the output air pressure of each air pump.