Air conditioner and control method therefor

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Solution Overview

Problem

Existing air conditioners provide a simple and direct blowing sensation that fails to meet the varied comfort needs of users, with large flow areas and air volumes causing discomfort by blowing air directly on the human body.

Innovation Solution

An air conditioner design featuring a first air guiding plate that can rotate to shield part of the air outlet, allowing for a breezeless mode with reduced air speed and volume, and a cooling/heating mode with increased air speed and volume, by adjusting the angle and position of the plate relative to the air outlet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the air outlet flow area and air volume are increased to extend air delivery distance, then the air delivery distance is improved, but the blowing sensation becomes direct and uncomfortable on the human body

Engineering Contradiction:
Improveair delivery distanceVSAvoiddirect blowing discomfort
Core Design Contradiction:
Length of moving objectVSObject-affected harmful factors

Solution Approach 1:

The air outlet is segmented into multiple adjustable guiding plates (first air guiding plate and second air guiding plate) that can independently rotate to different angles. This segmentation allows the air flow to be divided and redirected, creating a diffused blowing pattern that extends delivery distance while reducing direct impact on the human body.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air guiding plates are designed to be dynamically adjustable through rotation mechanisms, allowing the blowing angle and flow distribution to be changed in real-time. This enables the system to adapt between different modes (breezeless mode with plates closed at small angles for soft diffusion, and cooling/heating mode with plates open at large angles for strong directed flow), resolving the contradiction between delivery distance and comfort.

Inventive Principle:
Principle #15Dynamics

2Productivity

If the air outlet is completely open to maximize air flow, then the cooling/heating efficiency is improved, but the blowing sensation becomes too strong and uncomfortable

Engineering Contradiction:
Improvecooling/heating efficiencyVSAvoidstrong blowing sensation
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system provides dynamic adjustability of the air guiding plates, enabling switching between different operational modes. In cooling/heating mode, the plates can be positioned at large opening angles (65°-90°) to maximize air flow for high efficiency, while in breezeless mode, the plates rotate to closed positions with small angles (0°-5°) to diffuse the flow and reduce direct blowing, thus resolving the contradiction between efficiency and comfort.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The blowing characteristics are controlled by changing the rotation angle parameter of the air guiding plates. By adjusting this parameter between different ranges, the system transforms the air flow characteristics from high-speed direct flow to low-speed diffused flow, enabling the same physical structure to serve both high-efficiency cooling/heating and comfortable breezeless operation.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3604941B1Air conditioner and control method therefor
Publication Date: 2021.03.10 GD MIDEA AIR CONDITIONING EQUIP CO LTD
  • EP3604941B1 patent drawingFigure 1
  • EP3604941B1 patent drawingFigure 2

AI summary

Disclosed are an air conditioner and a method for controlling an air conditioner, where the air conditioner has a breezeless mode, and the air conditioner includes a housing provided with an air outlet; a first air guiding plate rotatably disposed at the air outlet, and connected with the housing through a first rotating shaft on the housing a first air guiding plate rotatably disposed at the air outlet, and connected with the housing through a first rotating shaft on the housing, and a second air guiding plate rotatably disposed in the air outlet passage.