Air-conditioning control device, air-conditioning apparatus, and air-conditioning system

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing air-conditioning systems struggle to prevent condensation when the amount of water vapor in a room changes, as they perform uniform anti-condensation operations based on predetermined time periods, leading to unavoidable condensation.

Innovation Solution

An air-conditioning control device that predicts changes in water vapor using a device operation table and adjusts the air-conditioning apparatus's operation state to prevent condensation by determining the dew-point temperature based on predicted water vapor levels and wall surface temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a uniform anti-condensation operation is performed based on a predetermined time period, then the control operation is simple to implement, but condensation cannot be prevented when the amount of water vapor in the room changes

Engineering Contradiction:
Improvesimplicity of control operationVSAvoideffectiveness of condensation prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent applies dynamics by transitioning from a static, uniform anti-condensation operation to a dynamic, adaptive operation. The air-conditioning apparatus now predicts future water vapor amounts based on current operation states and adjusts the anti-condensation operation intensity accordingly. This allows the system to maintain simplicity in implementation while improving reliability by adapting to changing water vapor conditions in the room.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If the anti-condensation operation is performed uniformly regardless of water vapor changes, then the device complexity is low, but the condensation prevention capability is insufficient

Engineering Contradiction:
Improvecomplexity of control systemVSAvoidcondensation prevention capability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent applies preliminary action by predicting the future amount of water vapor in the room before condensation actually occurs. The system uses the current operation state of water vapor-affecting devices and a prediction model to determine the anticipated water vapor amount, then proactively adjusts the anti-condensation operation in advance. This approach maintains relatively low device complexity while significantly improving condensation prevention capability through predictive control.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the air-conditioning apparatus adjusts operation based on predicted water vapor changes, then condensation prevention reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvecondensation prevention reliabilityVSAvoidcomplexity of control system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies feedback by continuously monitoring the operation states of water vapor-affecting devices and using this information to adjust the anti-condensation operation. The system establishes a feedback loop where the current operation state serves as input for prediction, the predicted water vapor amount determines the control adjustment, and the results can be used to refine future predictions. This feedback mechanism improves condensation prevention reliability while keeping the control system complexity manageable through structured information processing.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10845086B2Air-conditioning control device, air-conditioning apparatus, and air-conditioning system
Publication Date: 2020.11.24 MITSUBISHI ELECTRIC CORP
  • US10845086B2 patent drawing
  • US10845086B2 patent drawing
  • US10845086B2 patent drawing

AI summary

An air-conditioning control device for controlling an air-conditioning apparatus configured to perform air conditioning of a room in which a device that changes an amount of water vapor is located. The air-conditioning control device includes a condensation occurrence determiner configured to determine whether condensation occurs in the room after a certain amount of time elapses by using an amount of change in water vapor, which is predicted by collating device operation data with a device operation table, and an air-conditioning controller configured to change an operation state of the air-conditioning apparatus when the condensation occurrence determiner determines that condensation occurs.