Networked Boiler Control System for Multi-Zone Temperature Management
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Solution Overview
Problem
Conventional boiler networks face challenges in efficiently managing multiple boilers and zones with varying heat demands, leading to complexity and loss of functionality when external relay panels are used, necessitating improved control systems for efficient operation and temperature management.
Innovation Solution
A control system comprising a controller, pump systems, valving assemblies, and sensors that prioritize hot water distribution to multiple circuits at different temperatures, allowing for zone and priority control, and enabling communication between boilers to optimize boiler sequencing and power modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple boilers are installed to handle large variations in heat demand, then system turndown ratio and redundancy are improved, but device complexity and control difficulty increase
Solution Approach 1:
The patent combines multiple boilers into a single networked system with centralized control. The controller integrates sequencing logic, zone management, and communication functions to coordinate multiple boilers as one unified system, allowing them to operate individually or in combination to meet varying heat demands while maintaining simplified overall control.
Solution Approach 2:
The controller is designed with multi-functionality to handle diverse control tasks including boiler sequencing, zone temperature regulation, pump control, valve management, and inter-boiler communication. This universal control approach manages the complexity of multiple boilers through a single intelligent device that performs numerous functions.
2Adaptability or versatility
If external relay panels are used to network boilers, then boiler connectivity is achieved, but functionality is lost and system complexity increases
Solution Approach 1:
The patent extracts the intelligence and control functions from external relay panels and relocates them directly into the boiler control systems. Each boiler controller includes built-in communication capabilities and control logic, eliminating the need for separate external relay panels and their associated functionality losses.
Solution Approach 2:
The patent introduces a communication network as an intermediary between boilers and the central controller. This communication system enables direct data exchange and coordinated control among multiple boilers and the central controller, replacing the need for external relay panels while maintaining full system functionality.
3Measurement precision
If zone controls are added to manage different temperature requirements, then temperature precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent segments the heating system into multiple zones with independent temperature control. Each zone can be controlled separately with its own temperature setpoints, allowing different temperature requirements for different areas of the building while maintaining overall system coordination through the central controller.
Solution Approach 2:
The patent implements local quality control by allowing different zones to have different temperature setpoints and control parameters tailored to their specific requirements. The controller adjusts boiler output and zone distribution based on local temperature needs, providing optimized temperature control for each zone rather than uniform system-wide control.
4Reliability
If multiple boilers operate simultaneously for different uses, then system reliability and flexibility are improved, but coordination complexity and runtime balancing difficulty increase
Solution Approach 1:
The patent implements feedback control through the central controller that continuously monitors boiler operation status, runtime hours, and system temperature requirements. The controller uses this feedback information to dynamically adjust boiler sequencing, ensuring proper coordination, balancing runtime hours among boilers, and maintaining system reliability through intelligent decision-making.
Solution Approach 2:
The controller performs preliminary sequencing decisions by pre-determining which boilers should operate based on predicted heat demands, runtime balancing requirements, and system priorities. This preliminary action prevents coordination conflicts and ensures smooth boiler operation before actual temperature demands arise.
Data Source
AI summary
A hydronic system having a set of inputs, a plurality of boilers, and a controller. Each input representing sensor for a respective heat emitter of a set of heat emitters. Each boiler of the plurality of boilers is configured to receive signals from a portion of the set of inputs. The controller is configured to a status and assignment of the set of inputs from the plurality of boilers and control the plurality of boilers to provide heat to the set of heat emitters.