Energy Management Controller for Staggering Coffee Brewer Current Draws
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multiple devices with variable current draws, such as coffee brewers, often exceed the current capacity of residential or business electrical circuits, leading to circuit breakers tripping and disrupting power to all connected devices, especially when multiple brewers attempt to draw high currents simultaneously.
Innovation Solution
An energy management system comprising controller cards that monitor and manage the current draw of each device, using heat timers and wait timers to arbitrate when high power can be applied, preventing simultaneous high current draws and ensuring the circuit breaker does not trip by staggering the operation of high power demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple devices with high current draw capabilities are connected to the same electrical circuit, then the available power capacity and device functionality are improved, but the circuit breaker trips when simultaneous high current draws occur
Solution Approach 1:
The energy management controller performs preliminary monitoring of current draw levels before allowing high current operations. The controller detects when total circuit current is approaching the breaker trip threshold and preemptively prevents additional high current draws by blocking heater element activation, thereby avoiding circuit breaker tripping while maximizing device utilization
Solution Approach 2:
The system continuously monitors the total current draw from all connected devices and uses this feedback to dynamically control heater element operation. When the monitor detects current levels that would cause breaker tripping, the controller adjusts or prevents high current draws, creating a closed-loop control system that maintains reliable operation while maximizing power capacity utilization
2Reliability
If manual monitoring of current draw is implemented by users, then circuit breaker tripping can be avoided, but user burden and operational complexity increase
Solution Approach 1:
The energy management controller automatically performs the function of current monitoring and high current draw prevention without requiring user intervention. The controller autonomously detects current levels, determines when high current operations would cause breaker tripping, and independently controls heater element activation, completely eliminating the need for manual user monitoring while maintaining circuit protection
Solution Approach 2:
The energy management controller acts as an intermediary between the connected devices and the electrical circuit breaker. It monitors current draw and controls heater element operation to prevent breaker tripping, serving as an automated mediator that protects the circuit without requiring direct user involvement in monitoring or control decisions
3Productivity
If high power operation is permitted for all devices simultaneously, then productivity and device performance are improved, but excessive current draw causes circuit breaker tripping
Solution Approach 1:
The system permits high power operation when circuit capacity allows, but selectively limits or blocks high current draws when approaching breaker thresholds. The controller allows full productivity when available, and applies partial action (blocking only problematic high current operations) when necessary, optimizing the balance between productivity and reliability based on real-time circuit conditions
Data Source
AI summary
An energy management controller for controlling and limiting the time during which high current draws may be made by one or more of a plurality of single serve coffee brewers that are commonly connected to the same circuit and which include heater constructions that require and draw high power at certain times during operation, and require and draw lower power at other times. It includes one controller board, connected to the primary brewer to complete a circuit, and which board includes heat and wait timer functions to monitor the power status usage with respect to all of the brewers.