Air conditioner and control circuit

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Solution Overview

Problem

Existing air conditioners lack precise control over airflow orientation and temperature distribution, leading to inefficient temperature regulation in rooms, with airflows often deviating and not being effectively managed to maintain a pleasant temperature environment.

Innovation Solution

An air conditioner system incorporating a structural body with a first wind direction plate, auxiliary housings, a second wind direction plate, and a control circuit that adjusts the posture of these components to ensure the temperature-adjusted airflow stays within a certain range, using blower fans and wind direction plates to control airflow direction and speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If airflow is blown out from multiple air outlets without coordinated control, then air distribution coverage is improved, but airflow orientation control precision deteriorates

Engineering Contradiction:
Improveair distribution coverage areaVSAvoidairflow orientation control precision
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The air outlet system is segmented into a first air outlet for temperature-adjusted airflow and a second air outlet for indoor airflow, each with independent wind direction plates. This segmentation allows separate control of each airflow stream while maintaining overall coverage, resolving the contradiction between coverage area and control precision.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wind direction plates are designed to be dynamically adjustable with interconnected control mechanisms. When the first wind direction plate changes posture, the second wind direction plate automatically adjusts to maintain a predetermined intersection angle, enabling real-time precision control of airflow orientation while covering multiple directions.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If wind direction plates are adjusted independently for each air outlet, then airflow direction flexibility is improved, but temperature environment regulation efficiency deteriorates

Engineering Contradiction:
Improveairflow direction flexibilityVSAvoidtemperature environment regulation efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The control circuit establishes a feedback mechanism where the posture of the first wind direction plate serves as input to automatically adjust the second wind direction plate. This feedback loop ensures that both airflows work cooperatively to regulate temperature efficiently, rather than operating independently and potentially counterproductively.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The second wind direction plate serves multiple functions: it controls the indoor airflow direction independently while also responding to the first wind direction plate's position to maintain optimal airflow intersection angles. This multi-functionality allows flexible adaptation to different operational conditions while maintaining temperature regulation efficiency.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Area of stationary object

If temperature-adjusted airflow is allowed to spread freely without constraints, then air circulation coverage is improved, but temperature distribution control deteriorates

Engineering Contradiction:
Improveair circulation coverage areaVSAvoidtemperature distribution control precision
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The second airflow from the second air outlet acts as an intermediary element that works in conjunction with the first temperature-adjusted airflow. By controlling the intersection angle between these two airflows, the system guides the temperature-adjusted airflow to stay within desired zones while expanding overall circulation coverage, achieving both broad coverage and precise temperature control.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This solution enables efficient regulation of the temperature environment by ensuring the airflow remains within desired zones, providing a more pleasant temperature experience by preventing air from exceeding walls and maintaining warmth near floor surfaces.

Implementation Method 1

The airflow which passes through the dust collection filter is generated in a centrifugal fan

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

An air conditioner blows out cool air or warm air that is heat-exchanged by a heat exchanger from a first air outlet

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 3

The louver is attached to the first air outlet and the second air outlet

Methodology Applied
Scientific EffectPhysical deflection:

Data Source

PatentEP2942578B1Air conditioner and control circuit
Publication Date: 2020.11.18 FUJITSU GENERAL LTD
  • EP2942578B1 patent drawingFigure 1
  • EP2942578B1 patent drawingFigure 2
  • EP2942578B1 patent drawingFigure 3

AI summary

There is provided an air conditioner which can make a pleasant temperature environment. An air conditioner 12 includes a main body unit 25 and an auxiliary housing 26. The main body unit 25 forms a first air outlet 31 which blows out a cool or warm airflow. The auxiliary housing 26 is attached to at least one side of the first air outlet 31 to be freely movable, and forms a second air outlet 56 which blows out taken-in indoor air. A control circuit controls a second wind direction plate 57 so that a second reference plane PL2 which regulates a wind direction of the second wind direction plate 57 intersects a first reference plane PL1 which regulates a wind direction of a first wind direction plate 39, on a downstream side of the airflow.