Portable Air Compressor Sealing and Dual-Flow Piston Structure
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Solution Overview
Problem
Existing air compressors face challenges in portability due to reliance on fixed power supplies and inefficiencies in utilizing the piston's movement for both inflation and suction functions, with compatibility issues arising from advancements in battery technology.
Innovation Solution
A portable air compressor design utilizing a piston with dual check valves and a sealing member to enable simultaneous blowing and suction functions through reciprocating motion, combined with a plug adapter for battery compatibility and a buffer structure to manage air pressure fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the air compressor uses a fixed power supply with cable connection, then the device can maintain stable operation, but the portability is reduced
Solution Approach 1:
The power supply system transitions from a fixed cable connection to a dynamic battery configuration. The battery can be installed directly on the air compressor body, allowing the device to be portable while maintaining stable operation. The battery connection interface is designed to be detachable and replaceable, enabling dynamic adaptation between portable and fixed operation modes.
2Ease of operation
If the air compressor uses a battery directly installed on the device, then the portability is improved, but the compatibility with different battery technologies deteriorates
Solution Approach 1:
The air compressor is designed with a universal battery interface that can accommodate different battery types and technologies. The battery mounting structure includes standardized connection terminals and a detachable battery pack design, allowing users to replace batteries with different chemistries or capacities without modifying the air compressor body. This multi-functional battery interface ensures compatibility across evolving battery technologies.
3Device complexity
If the air compressor piston is used only for inflation, then the device structure is simple, but the utilization efficiency of the piston movement deteriorates
Solution Approach 1:
The air compressor integrates both inflation and suction functions into a single piston-driven system. The piston chamber is configured with dual air inlet ports and a central discharge port, allowing the piston to perform both compression (inflation) and vacuum (suction) operations during its reciprocating motion. This merging of functions doubles the utilization efficiency of the piston without significantly increasing device complexity.
Solution Approach 2:
The piston assembly is designed as a multi-functional component that can simultaneously serve inflation and suction purposes. By configuring the valve system and air passages appropriately, the same piston movement generates both positive pressure for inflation and negative pressure for suction, making the device versatile for different applications without requiring separate mechanisms.
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 design achieves portable air compression with dual functionality, enhanced airtightness, and adaptability to various battery sizes, ensuring efficient inflation and suction operations while managing pressure variations.
Implementation Method 1
During a first stroke, the piston compresses air in the cylinder
Implementation Method 2
the compressed air drives the first check valve to clear a passage of the air outlet pipe... and the compressed air drives the second check valve to block a passage of the air inlet pipe
Data Source
AI summary
A portable blowing and suction air compressor including a motor, a piston having first and second ends opposite to each other, a sealing member, a cylinder, and first and second check valves is disclosed. The first end is connected to the motor, the sealing member is sheathed onto the second end, and the second end is movably coupled to an inner wall of the cylinder. The second end leans against the inner wall through the sealing member. A cross section of the sealing member generates multiple contact zones on the inner wall. A recess is formed between two adjacent contact zones. The cylinder has an air inlet pipe and an air outlet pipe connected to an inner space of the cylinder and to an exterior environment respectively. The first check valve is disposed in the air inlet pipe, and the second check valve is disposed in the air outlet pipe.