Indoor unit for air conditioning device
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Solution Overview
Problem
Air conditioners with ceiling-mounted indoor units face temperature variations due to warm air being blown downward, where some air rises before reaching perimeter zones, resulting in inefficient heating and potential overheating.
Innovation Solution
The indoor unit employs an operation control section that adjusts airflow rates by reducing airflow in certain directions to increase speed in others, periodically changing blowing directions to ensure warm air reaches perimeter zones more effectively, thereby reducing temperature variations and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If warm air is blown downward in a heating operation, then the interior zone of the room is warmed, but temperature variations occur in the room due to air rising before reaching perimeter zones
Solution Approach 1:
The patent applies dynamics by periodically changing the blowing direction of the indoor unit between horizontal and downward directions. This dynamic adjustment allows the system to adapt to different thermal requirements: horizontal blowing directs warm air to perimeter zones, while downward blowing warms the interior zone, thereby reducing temperature variations and improving heating efficiency
Solution Approach 2:
The patent implements periodic action by alternating the blowing direction in cycles. The control unit switches between horizontal and downward blowing modes at predetermined intervals, ensuring that both the interior and perimeter zones receive adequate warm air supply over time, thus eliminating temperature stratification and improving overall heating performance
2Speed
If airflow is reduced in certain directions to increase blowing speed in others, then warm air reaches perimeter zones more effectively, but the airflow distribution becomes unbalanced
Solution Approach 1:
The system dynamically adjusts airflow distribution by switching between horizontal and downward blowing directions. During horizontal blowing, airflow is directed toward perimeter zones with higher speed to overcome distance and resistance. During downward blowing, airflow is directed toward the interior zone. This dynamic switching maintains overall airflow balance while optimizing speed for each direction's specific requirements
Solution Approach 2:
The control unit preliminarily determines the optimal blowing direction based on detected temperature conditions before executing the airflow adjustment. By anticipating which zone requires heating (perimeter or interior), the system pre-positions the blowing direction to deliver warm air efficiently, preventing temperature imbalances before they occur
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 approach enhances the distribution of warm air, reducing temperature variations and ensuring quick heating by optimizing airflow direction and speed, ensuring efficient heating while minimizing overheating risks.
Implementation Method 1
an operation control section (70) to carry out, in a heating operation, an airflow rate adjusting operation in which a reduced amount of the conditioned air is blown in one or more of the plurality of blowing directions to increase a blowing speed in the rest of the blowing directions
Data Source
AI summary
In order to carry out, in a heating operation, an airflow rate adjusting operation in which a reduced amount of conditioned air is blown in one or more of a plurality of blowing directions to increase a blowing speed in the rest of the blowing directions, an operation control section is configured to control the flow of the conditioned air such that the conditioned air is blown out in a horizontal blow mode in the blowing direction in which the blowing speed is increased by the airflow rate adjusting operation, and periodically change the blowing direction in which a reduced amount of the conditioned air is blown. As a result, temperature variations in the air-conditioning target space in the heating operation are reduced.