Controlled Atmosphere Workstation Sleeve Evacuation
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Solution Overview
Problem
Existing controlled atmosphere workstations, such as anaerobic workstations, require users to initiate the sleeve evacuation process using foot-operated switches, which can be inconvenient and prone to errors, especially in environments with wireless technology restrictions, adding unnecessary cost and complexity.
Innovation Solution
A controlled atmosphere workstation design that allows the sleeve evacuation system to be initiated by hand movement or the presence of a user, using pressure detection or wearable RFID/magnetic elements, eliminating the need for foot-operated switches and enhancing user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foot-operated switches are used to initiate the sleeve evacuation process, then the controlled atmosphere can be maintained, but user convenience deteriorates and device complexity increases
Solution Approach 1:
The patent replaces the mechanical foot-operated switch system with a sensor-based detection system. Pressure sensors detect hand movement into the sleeve, and RFID/magnetic sensors detect the presence of wearable elements, automatically initiating the evacuation process without mechanical foot switch operation. This substitution maintains atmospheric control reliability while dramatically improving ease of operation.
Solution Approach 2:
The system performs self-service by automatically detecting when a user needs to access the chamber and initiating the evacuation sequence without requiring manual activation. The sensors monitor sleeve conditions and automatically start the pump when hand presence is detected, eliminating the need for users to operate foot switches and improving convenience while maintaining safety.
2Reliability
If foot-operated switches are used to initiate the sleeve evacuation process, then the controlled atmosphere can be maintained, but device complexity and cost increase
Solution Approach 1:
The patent eliminates the mechanical foot switch system and its associated cabling or wireless communication infrastructure by implementing sensor-based detection. Pressure sensors, RFID readers, or magnetic sensors directly integrated into the workstation replace the complex foot switch mechanism, reducing overall system complexity while maintaining reliable atmospheric control through automated detection and response.
Solution Approach 2:
The patent extracts and removes the foot-operated switch component entirely from the system, replacing it with integrated sensor technology. By taking out the unnecessary mechanical interface, the system achieves the same atmospheric control function with reduced complexity and lower cost, while improving user convenience through automatic initiation.
3Device complexity
If manual initiation methods are used for sleeve evacuation, then device complexity is reduced, but productivity decreases due to additional time required for operation
Solution Approach 1:
The system performs preliminary action by continuously monitoring for hand presence or wearable element detection before the user actually needs to access the chamber. The sensors are already in place and actively detecting, so when the user approaches or inserts their hand into the sleeve, the evacuation process can be immediately initiated without any additional manual activation time, thereby improving productivity while maintaining simple automated operation.
Solution Approach 2:
The sensor monitoring system operates continuously, maintaining constant surveillance for hand presence or wearable elements. This continuous useful action ensures that the evacuation process can be initiated immediately when needed, eliminating delays associated with manual foot switch operation and improving overall productivity while keeping the system design relatively simple.
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 a user-friendly and reliable initiation of the sleeve evacuation process, maintaining the controlled atmosphere while reducing costs and user discomfort, by allowing hand-operated initiation of the gas evacuation/refilling cycle within the workstation.
Implementation Method 1
the workstation comprises means for detecting changes in air pressure in the vicinity of the porthole, and wherein the sleeve evacuation system is initiated by detecting a change in the pressure
Implementation Method 2
This may, for example, be done by detecting at the porthole an element worn on the hand or arm of a user. This element may, for example, be an RFID element, and an RFID sensor may be provided at the porthole
Implementation Method 3
Alternatively the element may be a magnetic element, and a magnetic sensor may be provided at the porthole
Data Source
AI summary
There is provided a method for initiating a sleeve evacuation process in a controlled atmosphere workstation that comprises a chamber, at least one porthole that may be opened for enabling a user to access the chamber, and a sleeve secured to the least one porthole. The method involves placing the hand of a user within the sleeve with the sleeve engaging the forearm of the user, and initiating the sleeve evacuation process in response to the hand and forearm within the sleeve. In an embodiment of the invention the user forms a fist and moves the fist towards the porthole. This creates a pressure increase that can be detected to initiate the evacuation process. Alternatively the user may wear on his or her hand or forearm an element such as a magnetic element or an RFID chip that can be detected at the porthole to begin the evacuation process.