Indoor Air Deflector Venting for Windless Air Conditioning
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Solution Overview
Problem
Conventional air conditioners often blow cold wind directly, which is uncomfortable for users, especially vulnerable groups like the elderly, pregnant women, and children, and do not provide a comfortable user experience.
Innovation Solution
An air conditioner indoor unit with an inner air deflector featuring vent holes that cover at least 50% of its area, allowing airflow to reduce wind speed and volume while maintaining cooling and heating efficiency, and a rotatable design to switch between windless and open modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air conditioners blow cold wind directly, then cooling efficiency is improved, but user comfort deteriorates due to direct cold wind exposure
Solution Approach 1:
The air outlet is segmented into multiple vent holes distributed across the inner air deflector, transforming a single direct airflow path into multiple dispersed paths. This segmentation reduces the directness and intensity of cold wind exposure while maintaining overall cooling effectiveness through distributed airflow coverage.
Solution Approach 2:
The vent holes are designed with specific local characteristics including varied diameters (2-4mm), different orientations (inclined angles), and non-uniform distribution patterns. These local quality variations allow each vent hole to contribute differently to the overall airflow, creating a softened and dispersed cooling effect that maintains efficiency while improving comfort.
2Speed
If the inner air deflector is designed with vent holes covering at least 50% of its area, then wind speed and volume are reduced, but maintaining cooling and heating efficiency becomes challenging
Solution Approach 1:
The vent holes are oriented at inclined angles rather than perpendicular to the air outlet, introducing a dimensional change in airflow direction. This angular orientation disperses the airflow in multiple directions, reducing direct wind speed while maintaining thermal exchange efficiency through extended airflow path and increased air-to-surface interaction.
Solution Approach 2:
The design parameters of the vent holes ( diameter, orientation angle, distribution pattern, and total area ratio of ≥50%) are optimized to achieve a balance between speed reduction and thermal efficiency. The specific parameter range of 2-4mm diameter and inclined orientations create optimal conditions for both wind speed reduction and maintaining cooling/heating effectiveness.
3Adaptability or versatility
If the inner air deflector is made rotatable to switch between windless and open modes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The inner air deflector is designed as a rotatable component that can dynamically switch between different operational positions (windless mode with vent holes facing outward and open mode with vent holes facing inward). This dynamic capability allows the system to adapt to different user needs and environmental conditions while maintaining a relatively simple mechanical rotation mechanism.
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
The solution effectively decreases wind speed and volume to a nearly windless state, enhancing user comfort and maintaining indoor temperature control efficiency.
Implementation Method 1
the plurality of vent holes penetrating the inner air deflector in a thickness direction, and a total area of the plurality of vent holes being not smaller than 50% of a total area of the inner air deflector
Data Source
AI summary
An air conditioner indoor unit includes a body including an air outlet, an outer air deflector provided at the air outlet and configured to open and close the air outlet, and an inner air deflector located at an inner side of the outer air deflector. The inner air deflector includes a plurality of vent holes penetrating the inner air deflector in a thickness direction of the inner air deflector. A total area of the plurality of vent holes is not smaller than 50% of a total area of the inner air deflector.