Indoor Unit Expansion Board Layout for Compact Main Board Control
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Solution Overview
Problem
Existing air-conditioning apparatus indoor units require a large main board due to numerous connection terminals for additional functions, leading to increased size and complexity.
Innovation Solution
The implementation of an expansion board with compatible terminals allows the main board to connect to expansion units without needing multiple terminals, maintaining a compact size by using a standard connection system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple connection terminals are provided on the main board for additional functions, then the adaptability and versatility are improved, but the area of the main board increases
Solution Approach 1:
The patent divides the connection terminal functionality into two segments: a standard connection terminal on the main board and an expansion connection terminal on a separate expansion board. This segmentation allows the main board to maintain a compact size while the expansion board provides additional connection points for multiple expansion units, thereby resolving the contradiction between adaptability and main board area.
Solution Approach 2:
The expansion board acts as an intermediary component between the main board and multiple expansion units. It receives the standard connection signal from the main board and distributes it to multiple expansion units through its own connection terminals, enabling the system to support multiple expansion functions without requiring multiple terminals on the main board itself.
2Adaptability or versatility
If multiple connection terminals are provided on the main board, then the device complexity increases, but the adaptability improves
Solution Approach 1:
The patent segments the complex terminal connection system into a simple standard terminal on the main board and a separate expansion terminal system on the expansion board. This segmentation reduces the complexity of the main board design while maintaining the ability to support multiple expansion units through the standardized interface.
Solution Approach 2:
The standard connection terminal on the main board is designed with universal compatibility to work with any expansion unit through the standardized interface. This universal design allows a single terminal configuration to support multiple different expansion functions, reducing device complexity while maintaining high adaptability.
3Adaptability or versatility
If the main board size is increased to accommodate multiple terminals, then the connection capability is improved, but the air passage becomes insufficient
Solution Approach 1:
The patent segments the connection functionality from the main board to a separate expansion board, allowing the main board to maintain its original compact size. This ensures that the air passage requirements of the main body are not compromised, while the expansion board provides the necessary connection capability for multiple expansion units.
Data Source
AI summary
An indoor unit of an air-conditioning apparatus includes a main body including a main board that is provided with a control terminal compatible with a plurality of expansion units. The main board is connected to an expansion board provided with at least one expansion terminal that is a connection terminal compliant with the same standard as the control terminal, and is connected to at least one of the plurality of expansion units via the expansion board.