Compressed Air Control Device with Dynamic Pressure Regulation
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Solution Overview
Problem
Existing consumer control devices for compressed air systems are inefficient in managing energy usage and fail to seamlessly transition between operational and standby modes, leading to unnecessary energy consumption and potential device malfunctions due to pressure fluctuations.
Innovation Solution
Incorporating an electrically controllable shut-off valve downstream of the proportional pressure regulating valve, which automatically switches to a shut-off position when air flow drops below a specified threshold, and back to a release position when outlet pressure falls below a threshold, allowing the system to transition between working and hold modes to conserve energy while maintaining minimum operational pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the proportional pressure regulating valve maintains working pressure continuously, then the consumer device is always ready for operation, but energy consumption increases unnecessarily during idle periods
Solution Approach 1:
The system dynamically switches between two pressure levels (working pressure and hold pressure) based on operational state. The proportional pressure regulating valve adjusts its setpoint pressure according to whether the system is in working mode or idle mode, optimizing energy consumption while maintaining device readiness when needed.
Solution Approach 2:
The pressure parameter is changed between two discrete levels: a higher working pressure for active operation and a lower hold pressure for idle periods. This parameter switching is controlled by the electronic control unit based on flow sensor input, allowing the system to adapt energy consumption to actual operational requirements.
2Use of energy by moving object
If the outlet pressure is reduced to hold pressure during idle mode, then energy is saved, but the consumer device may experience malfunctions due to pressure fluctuations
Solution Approach 1:
The flow sensor provides continuous feedback about air consumption, enabling the electronic control unit to detect when the system transitions to idle state. This feedback mechanism ensures pressure reduction occurs only when appropriate, preventing malfunctions by maintaining working pressure during actual operation and reducing to hold pressure only during genuine idle periods.
Solution Approach 2:
The system automatically detects its own operational state through the flow sensor and self-regulates the pressure level accordingly. The electronic control unit monitors air flow and autonomously switches between working and hold pressure modes without external intervention, ensuring reliable operation while optimizing energy consumption.
3Use of energy by moving object
If a shut-off valve is added to the outlet channel to prevent air passage during standby, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The proportional pressure regulating valve performs multiple functions: it regulates pressure during working mode and acts as a flow control mechanism during idle mode. By leveraging the existing valve's capabilities rather than adding dedicated components, the system achieves energy savings while minimizing increases in device complexity.
Solution Approach 2:
The pressure regulation and flow control functions are merged into a single proportional pressure regulating valve system. The electronic control unit integrates pressure regulation and idle detection functions, coordinating the valve's operation to achieve both pressure maintenance and energy savings without requiring separate dedicated components for each function.
Data Source
AI summary
A consumer control device, with which an external consumer device can be supplied with compressed air in a controlled manner, contains a compressed air maintenance unit, equipped with a proportional pressure regulating valve that can be electrically actuated, which is connectable via an outlet channel with the consumer device to be actuated. In the outlet channel an electrically controllable shut-off valve and an outlet pressure sensor are connected, both of which communicate with an internal electronic control unit, which is also supplied with information on the air flow in the outlet channel. The consumer control device can be operated according to a similarly proposed method, in that the consumer device in a normal operating phase is supplied with compressed air by the shut-off valve that is in the release position, which is regulated by a proportional pressure regulating valve adopting working mode at a working pressure value.