Outdoor Unit Relay Detection for Flexible Air Conditioning Control
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Solution Overview
Problem
Air-conditioning systems require different software configurations based on the presence or absence of a relay unit, leading to labor-intensive and costly changes when system configurations are altered.
Innovation Solution
An air-conditioning system with an outdoor unit that searches for a relay unit by exchanging heat media and communicates to determine the presence of a relay unit, allowing it to set either the relay unit or indoor unit as a control target based on communication responses and identification IDs, eliminating the need for software changes during configuration changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different software configurations are used for systems with and without relay units, then the control functionality is accurate for each configuration, but the labor and costs increase when changing system configurations
Solution Approach 1:
The patent implements a universal software platform that can operate with or without a relay unit by dynamically detecting the system configuration. The outdoor unit automatically identifies whether a relay unit is present in the communication path and adjusts its control mode accordingly, eliminating the need for separate software versions. This multi-functional approach allows the same software to serve both direct expansion and indirect expansion system configurations.
Solution Approach 2:
The system dynamically adapts its control target based on the detected configuration. The outdoor unit control unit changes its operational mode in real-time depending on whether communication with the indoor unit is direct or via a relay unit. This dynamic adjustment capability allows the system to maintain optimal control functionality across different configurations without requiring software changes.
2Adaptability or versatility
If the system automatically detects relay unit presence through communication, then the adaptability to different configurations is improved, but the communication protocol complexity increases
Solution Approach 1:
The system uses feedback from communication responses to automatically detect the presence of a relay unit. The outdoor unit sends communication commands to a particular communication address, and based on whether a response is received or what identification ID is returned, it determines the system configuration. This feedback mechanism enables automatic adaptation without requiring complex manual configuration procedures.
Solution Approach 2:
The system performs self-detection and self-configuration automatically without requiring external intervention. The outdoor unit control unit autonomously identifies whether a relay unit is present by analyzing communication responses and automatically sets the appropriate control target (indoor unit or relay unit). This self-service capability simplifies the overall system deployment and reduces installation complexity.
Data Source
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AI summary
An air-conditioning system includes an outdoor unit functioning as a heat source device, and an indoor unit configured to condition air in an air-conditioned space, in which the outdoor unit includes an outdoor unit control unit configured to search for a relay unit configured to relay heat transfer between the outdoor unit and the indoor unit by exchanging heat of heat media, and an outdoor unit communication unit configured to communicate with an outside, and the outdoor unit control unit transmits a first communication command from the outdoor unit communication unit to a particular communication address, and when a communication response is returned to the outdoor unit communication unit, determines what exists at the particular communication address based on an identification ID transmitted from the particular communication address to the outdoor unit communication unit, and sets the relay unit as a control target when it is determined that the relay unit exists at the particular communication address, and sets the indoor unit as the control target when it is determined that what exists at the particular communication address is not the relay unit or when the communication response is not returned to the outdoor unit communication unit.