Electromagnetic Vacuum Valve for Pneumatic Elevator Descent Control
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Solution Overview
Problem
Current pneumatic elevator systems require significant power to control the descent of the elevator cabin due to the need for force proportional to air released from the orifice and pressure difference between chambers, with no known mechanism to efficiently overcome this deficiency, and there is a need for a vacuum elevator system that can be activated with minimal energy and comply with safety norms and laws.
Innovation Solution
A vacuum valve system comprising a pneumatic elevator cylinder with a diaphragm device, a hollow tubular member, and an electromagnetic switch, which allows air flow between chambers at different pressures to regulate the descent speed of the cabin by using a regulation member with a passageway and an Allen screw to control airflow, minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If current vacuum valve systems are used to control cabin descent, then the cabin can be controlled to descend, but tremendous amounts of power are absorbed in operation
Solution Approach 1:
The patent replaces traditional mechanical vacuum valve systems with an electromagnetic valve system. The electromagnetic valve uses electromagnetic fields to control the opening and closing of air passages, eliminating the need for complex mechanical linkages and reducing power consumption while maintaining reliable control of the cabin descent speed.
Solution Approach 2:
The patent changes the operating parameters of the vacuum system by using an electromagnetic valve that can precisely control the timing and duration of air intake. This allows the system to achieve the required cabin descent control with minimal power consumption by optimizing the vacuum pressure cycles.
2Reliability
If a pneumatic elevator system is designed to control descent speed, then safe operation can be achieved, but a great deal of power is required
Solution Approach 1:
The patent employs periodic action by cycling the electromagnetic valve to create repeated vacuum and air intake phases. This periodic operation allows the cabin to descend at a controlled speed by rhythmically adjusting the air pressure in the cylinder, achieving safe operation with minimal continuous power consumption.
Solution Approach 2:
The system utilizes the natural weight of the cabin and the elastic recovery of the diaphragm to assist in the descent and recovery processes. The diaphragm automatically returns to its original position after air intake, eliminating the need for additional power to reset the valve mechanism.
3Speed
If air flow is controlled through an orifice to achieve descent speed, then cabin speed can be regulated, but tremendous power is absorbed
Solution Approach 1:
The patent replaces traditional mechanical flow control mechanisms with an electromagnetic valve that controls air flow electronically. This substitution reduces energy loss by precisely controlling when and how much air enters the system, thereby regulating descent speed without the continuous energy dissipation associated with mechanical flow restriction.
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 energy consumption while allowing controlled descent and ascent of the elevator cabin, ensuring safe and efficient operation by utilizing differential pressures and electromagnetic control to manage airflow, thus overcoming the power requirements of existing systems.
Implementation Method 1
the force proportional to the air released from the orifice of the cabin multiplied by the pressure difference between the two chambers (the cabin and the operating cylinder)
Implementation Method 2
an electromagnetic switch attached to a bottom of the hollow tubular member
Data Source
AI summary
A pneumatic vacuum valve is situated atop a cylinder or convenient working space utilized in conjunction with a pneumatic elevator. The vacuum valve has a coupling unit holding a diaphragm device for actuation of the diaphragm against a flow control opening. An Allen screw uses a simple regulation device to control the flow of air into a working chamber for expansion and contraction of the diaphragm device.