Air conditioning system
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Solution Overview
Problem
In small and medium-scale buildings, refrigerant leaks in air conditioning systems often go unnoticed due to the absence of centralized management devices, leading to delayed responses, and the polling communication method in air conditioning systems can further delay notifications of refrigerant leaks.
Innovation Solution
The air conditioning system is configured to allow specific remote controllers to have notification authority, enabling immediate notification of refrigerant leaks to managers, and uses a broadcast method for immediate communication of leak information within groups, ensuring timely alerts regardless of communication order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If polling communication method is used for notification, then device complexity is reduced, but notification speed deteriorates
Solution Approach 1:
The notification system dynamically adapts its communication method based on the operational state. When a refrigerant leak is detected, the system transitions from passive polling to active broadcast notification, allowing immediate alert transmission without waiting for the next polling cycle, thus reducing notification delay while maintaining simple device architecture
Solution Approach 2:
The control device acts as an intermediary that receives detection information from refrigerant sensors and actively transmits notifications to notification devices. This intermediary function enables the system to bypass the limitations of polling communication by initiating immediate notifications when leaks are detected, resolving the contradiction between simple device structure and fast notification
2Reliability
If centralized management devices are installed for refrigerant leak detection, then detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The notification authority is segmented and assigned to individual remote controllers rather than requiring a centralized management device. Each remote controller can independently issue notifications when its associated indoor unit detects a refrigerant leak, eliminating the need for complex centralized management infrastructure while maintaining reliable leak detection and notification
Solution Approach 2:
The system enables self-service notification where remote controllers and indoor units autonomously handle leak detection and alert transmission without requiring centralized management coordination. The notification device associated with the detecting indoor unit can immediately issue alerts, simplifying the overall system architecture while ensuring reliable refrigerant leak detection
3Reliability
If notification authority is distributed to multiple remote controllers, then notification reliability is improved, but control complexity increases
Solution Approach 1:
Notification authority is assigned based on local conditions - specifically, which remote controller is associated with the indoor unit that detects the refrigerant leak. This localized assignment of notification rights simplifies control logic compared to complex distributed authority models, as each remote controller only needs to notify when its own associated indoor unit detects a leak, achieving reliable notification without excessive control complexity
Data Source
AI summary
An air conditioning system includes a first device and a second device that are communicably connected to each other and through which a refrigerant flows, a first refrigerant sensor that is provided in the first device and detects the refrigerant, a first notification device that is communicably connected to the first device and makes a notification of a refrigerant leak on the basis of detection of the refrigerant by the first refrigerant sensor, and a control device that controls the first device and the second device, in which an authority to make a notification of a refrigerant leak on a basis of detection of the refrigerant received from other than the first refrigerant sensor is settable to the first notification device.