HVAC Zone Airflow Remote Adjustment for Multi-Zone Testing Efficiency

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Solution Overview

Problem

Testing the effectiveness of HVAC systems across multiple zones in a building is a time-consuming process, requiring technicians to physically adjust and verify air flow settings in each zone, which can be inefficient, especially in large structures with multiple zones.

Innovation Solution

A system comprising a primary HVAC control system and secondary zone control systems that communicate to adjust air flow, allowing technicians to remotely request and manage air flow adjustments through a processor that determines affected zones and adjusts damper positions, enabling efficient testing and optimization of air flow across multiple zones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If technicians physically test and adjust air flow in each zone manually, then air flow effectiveness can be verified, but the process becomes time-consuming and inefficient

Engineering Contradiction:
Improveair flow effectiveness verificationVSAvoidtesting process duration
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system enables self-service testing where the HVAC system automatically performs air flow measurements and adjustments without requiring manual intervention. Sensors automatically detect air flow conditions and the control system autonomously adjusts dampers to optimize performance, eliminating the need for technicians to physically visit each zone for manual testing.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical testing procedures with an automated electronic control system. Instead of technicians physically measuring and adjusting air flow manually, the system uses electronic sensors, processors, and automated damper control to perform measurements and adjustments remotely, substituting mechanical human operations with automated electronic mechanisms.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If multiple zones are tested sequentially by technicians, then each zone's air flow can be optimized, but operational efficiency decreases

Engineering Contradiction:
Improveair flow optimizationVSAvoidtesting and adjustment efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system merges the testing and adjustment operations for multiple zones into a single integrated automated process. Instead of technicians sequentially visiting each zone to perform separate testing and adjustment tasks, the control system combines all measurements and adjustments into one coordinated operation that occurs simultaneously across all zones, thereby improving productivity while maintaining optimization precision.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The automated system enables continuous air flow optimization across all zones without interruption. While manual testing requires technicians to move between zones creating gaps in the optimization process, the automated system continuously monitors and adjusts air flow in all zones simultaneously, maintaining uninterrupted useful action and thereby improving overall productivity.

Inventive Principle:
Principle #20Continuity of useful action

3Ease of operation

If technicians adjust damper positions manually in each zone, then precise air flow control is achieved, but the complexity of operation increases

Engineering Contradiction:
Improveair flow adjustmentVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary automated control system that mediates between the operator's simple command and the complex task of adjusting multiple dampers across various zones. Instead of requiring technicians to manually navigate complex adjustment procedures in each zone, the intermediary system receives simple input commands and automatically executes the complex sequence of damper adjustments, thereby improving ease of operation while managing control system complexity through automation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS10691423B2Testing systems and methods for performing HVAC zone airflow adjustments
Publication Date: 2020.06.23 JOHNSON CONTROLS TECHNOLOGY CO
  • US10691423B2 patent drawing
  • US10691423B2 patent drawing
  • US10691423B2 patent drawing

AI summary

A heating, ventilation, and air conditioning (HVAC) system may include a HVAC unit that may control air flow, a first control system that may directly control operation of equipment in the HVAC unit, and a second control system communicatively coupled to the first control system. The second control system may be located in a different zone of a building as compared to the first control system, such that the second control system may receive a request to adjust the air flow output by the HVAC unit and send a command to the first control system based on the request. The command may cause the first control system to adjust the operation of the equipment in the HVAC unit to cause the air flow output by the HVAC unit to be adjusted according to the request.