Substitute air-conditioning system and information processing method

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Solution Overview

Problem

Existing air-conditioning systems fail to effectively detect and adjust to temperature or air component stratification in indoor spaces, leading to inefficient air-conditioning control.

Innovation Solution

A replacement air-conditioning system that forms stratification of temperature and air components by supplying conditioned air to the lower side of a room and discharging indoor air from the upper side, using detection units to measure temperatures and air components at specific heights, and a control unit to determine and adjust the boundary height of stratification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If temperature is detected at a preset temperature stratification height, then air-conditioning control is performed based on detection value, but the detected temperature value does not necessarily reflect the actual stratification state of temperature or air component

Engineering Contradiction:
Improvedetection accuracy of stratification stateVSAvoidinformation suitability for grasping stratification state
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The detection space is segmented into multiple height zones (first height above assumed boundary, second height below assumed boundary) to capture temperature differences across the stratification interface. This segmentation allows the system to detect whether the actual boundary exists between these heights by comparing temperature differences, thereby accurately grasping the stratification state without losing critical information.

Inventive Principle:
Principle #1Segmentation

2Reliability

If air-conditioning system supplies conditioned air and discharges indoor air to form stratification, then clean zone is created at lower part of room, but system complexity increases due to multiple detection heights and boundary determination

Engineering Contradiction:
Improveair environment control effectivenessVSAvoiddetection and control system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control unit receives temperature data from detection units at multiple heights, determines the actual boundary height based on temperature differences, and feeds this information back to adjust air supply and discharge operations. This feedback mechanism enables the system to dynamically adapt to changing stratification states, improving reliability while managing complexity through automated boundary determination algorithms.

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively forms and maintains a clean zone with low-temperature and low-contaminant air at the lower part of the room, while managing stratification to optimize air-conditioning efficiency and reduce energy consumption.

Implementation Method 1

form stratification of a temperature or an air component in a room by supplying conditioned air to a lower side of the room and discharging indoor air from an upper side of the room

Methodology Applied
Scientific EffectTemperature stratification: Temperature Gradient

Data Source

PatentEP4647677A1Substitute air-conditioning system and information processing method
Publication Date: 2025.11.12 DAIKIN INDUSTRIES LTD
  • EP4647677A1 patent drawingFigure 1
  • EP4647677A1 patent drawingFigure 2
  • EP4647677A1 patent drawingFigure 3A~3B

AI summary

There are provided a replacement air-conditioning system and the like capable of detecting information suitable for grasping a state of stratification of a temperature or an air component. The replacement air-conditioning system is configured to be able to form stratification of a temperature or an air component in a room by supplying conditioned air to a lower side of the room and discharging indoor air from an upper side of the room, and includes a detection unit that detects the temperature or the air component in the room. The detection unit detects temperatures or air components at a first height set above an assumed boundary height of the stratification in the room and a second height set below the assumed boundary height.