Central Fan Shutdown Control for Emergency Alarm Response
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Solution Overview
Problem
Existing facility fan systems are inefficient and complex in shutting down multiple fans during emergencies, as each fan typically requires independent shutdown and may involve complex wiring to connect with building alarm systems, increasing the likelihood of errors.
Innovation Solution
A fan control system that operates in a daisy chain or network configuration, where a system controller, connected to a power source and alarm system, automatically shuts down all fans by interrupting power or network signals upon detection of an emergency condition, reducing complexity and improving operational control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each fan is individually wired to the building alarm system, then the fan shutdown function is achieved, but the system complexity and likelihood of errors increase
Solution Approach 1:
The patent combines multiple individual fan control functions into a single centralized control system. The controller receives a single alarm signal and coordinates shutdown of all fans through a unified control architecture, eliminating the need for separate wiring from each fan to the alarm system while maintaining reliable shutdown functionality.
Solution Approach 2:
The centralized controller serves multiple functions: it receives alarm signals, processes shutdown commands, and distributes control signals to all fans. This multi-functional approach replaces multiple dedicated control paths, reducing wiring complexity while achieving the same reliability outcome.
2Ease of operation
If independent shutdown control is implemented for each fan, then individual fan control is achieved, but the shutdown time increases
Solution Approach 1:
The system pre-establishes a centralized control architecture that is ready to execute simultaneous shutdown of all fans upon receiving an alarm signal. The controller is pre-configured with knowledge of all fan locations and control paths, enabling immediate coordinated shutdown without the time delay of sequential individual control.
Solution Approach 2:
The controller implements coordinated control with feedback mechanisms to monitor and synchronize the shutdown status of all fans. This ensures that the shutdown operation is executed efficiently and simultaneously across the entire fan system, minimizing total shutdown time while maintaining proper control of each individual fan.
Data Source
AI summary
Systems and methods for controlling a system of fans in a facility from a central system controller are disclosed herein. In one embodiment, the system of fans can be configured to shut down automatically during an emergency condition or event. For example, a fan system controller can be connected to the system of fans and provide a signal to each of the fans. While each of the fans receives the signal, power is connected to a motor on each of the fans. Upon detection of an emergency condition, the fan system controller disconnects the signal to the fans, thereby automatically simultaneously shutting down the entire system of fans.