Electro-pneumatic Can Crusher with Hub Head
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Solution Overview
Problem
Existing can crushers, particularly those for home consumers, require significant manual effort to crush aluminum drink cans, which is physically demanding and inefficient, and there is a need to reduce the volume of cans for storage and recycling while making the process fun and safe.
Innovation Solution
An electro-pneumatic can crushing system using pneumatics and electricity to minimize physical work, featuring a pneumatic air cylinder for crushing and ejection, with a hub-type crushing head to contain the cans within a lightweight and portable containment structure, operated by a user-friendly control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual lever operated can crushers are used, then the device complexity is low, but the physical effort required by the user is high
Solution Approach 1:
The patent replaces the manual mechanical lever system with an electro-pneumatic system consisting of an electric motor, gear train, and pneumatic cylinder. This substitution eliminates the need for direct manual force application while maintaining the crushing function, thereby reducing physical effort without significantly increasing overall system complexity.
Solution Approach 2:
The patent employs a pneumatic cylinder driven by an air compressor to generate the crushing force. The pneumatic system converts compressed air energy into mechanical motion, providing sufficient force to crush aluminum cans without requiring the user to apply significant manual force, thus resolving the contradiction between device complexity and ease of operation.
2Ease of operation
If electro-pneumatic systems are used to reduce physical work, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The electro-pneumatic system is designed to perform multiple functions: the air compressor serves both as a pneumatic power source and as a mechanism to create negative pressure for can ejection. The same pneumatic cylinder that crushes the can can also be used to eject it. This multi-functionality reduces the number of separate components needed, thereby limiting the increase in device complexity while maintaining improved ease of operation.
Solution Approach 2:
The system is designed to be self-regulating and self-contained. The control system automatically manages the sequencing of operations (crushing, holding, ejection) without requiring complex user intervention. The pneumatic system self-regulates pressure and flow, reducing the need for complex control mechanisms and minimizing the increase in device complexity.
3Volume of moving object
If can volume is reduced for storage and recycling, then the space efficiency improves, but the device complexity increases
Solution Approach 1:
The crushing process uses periodic pneumatic pressure cycles to progressively compress the can. The system applies pressure, holds it, releases, and repeats this cycle multiple times to achieve maximum compression. This periodic action allows the can to be compacted into a small volume without requiring excessively complex continuous compression mechanisms, thereby achieving space efficiency with manageable device complexity.
Solution Approach 2:
The pneumatic system dynamically adjusts pressure levels and application duration during the crushing process. The control system varies the pneumatic parameters to optimize can compression while preventing can fragmentation. This dynamic control achieves effective volume reduction without requiring overly complex static compression structures.
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 system effectively reduces the physical effort required to crush aluminum cans, allowing for efficient processing of multiple cans without structural failures, and is designed to be safe and fun to operate, addressing the space and waste management issues by compacting cans for easier storage and transportation.
Implementation Method 1
The system uses pneumatics (air) to perform the actual work
Implementation Method 2
A hub type crushing head ensures the can stays inside the containment structure during the crushing process
Implementation Method 3
eject the crushed can utilizing a pneumatic air cylinder
Data Source
AI summary
An apparatus for crushing aluminum beverage cans, including; a containment structure with an integral crushing chamber, a pneumatic crushing cylinder with a hub type crushing head which ensures the can remains inside the crushing chamber during the crushing event, an ejection cylinder with an ejection ram, solenoid control valves, a safety interlock switch and a 3 position control switch, an air/gas supply and distribution system and an electrical control system. Two pneumatic cylinders; which are supplied air via two 3-way solenoid control valves, are used to perform the crushing and ejection work. Simultaneous two handed switch operation is required to energize either of the 3-way solenoid control valves to route air to the pneumatic cylinders. Two handed switch operation ensures that the operator's hands are free of the crushing chamber during operation.