Refrigerant Leak Sensor Integration into Legacy Climate Control Boards
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Legacy climate control systems lack refrigerant leak sensors, making it difficult to comply with new industry regulations that mandate their inclusion.
Innovation Solution
Integration of a refrigerant sensor into the control board of legacy systems by repurposing existing connection points or adding dedicated inputs, combined with control logic and blower activation to manage leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a refrigerant leak sensor is added to a legacy climate control system, then regulatory compliance and safety are improved, but system complexity and installation difficulty increase
Solution Approach 1:
The control board is designed with multi-functionality by incorporating a universal sensor interface that can accommodate different types of refrigerant leak sensors (e.g., A2L sensors) while also maintaining compatibility with existing system functions. This allows the same control board to serve both legacy systems and newer regulatory requirements without requiring separate dedicated hardware for each function.
Solution Approach 2:
An intermediary adapter or interface circuit is introduced between the refrigerant sensor and the legacy control system. This intermediary component translates sensor signals into formats compatible with existing control boards, enabling integration without directly modifying the core legacy system architecture and thus minimizing complexity increases.
2Reliability
If a refrigerant leak sensor is integrated into the control board, then regulatory compliance is achieved, but manufacturing cost increases
Solution Approach 1:
The control board incorporates a universal sensor interface that can detect multiple types of refrigerants and sensor signals through a single integrated circuit design. This multi-functional approach eliminates the need for separate dedicated sensor boards or multiple specialized components, thereby reducing overall component count and manufacturing costs while ensuring compliance with regulations covering different refrigerant types.
Solution Approach 2:
The refrigerant leak detection functionality is merged with the existing control board architecture rather than being implemented as a separate standalone unit. By combining the sensor interface, signal processing, and control logic into the existing control board firmware and hardware, the patent reduces assembly steps, inventory requirements, and manufacturing complexity,ไป่ lowering production costs.
3Ease of operation
If existing connection points are repurposed for sensor integration, then installation ease is improved, but system reliability may be compromised
Solution Approach 1:
An intermediary isolation circuit or buffer is introduced between the repurposed connection points and the sensor interface. This intermediary component electrically isolates the sensor signals from potential interference in the legacy system while maintaining signal integrity, thus enabling easy installation at existing connection points without compromising reliability.
Solution Approach 2:
The control board incorporates feedback mechanisms that continuously monitor the electrical characteristics and signal quality at the repurposed connection points. If interference or anomalies are detected, the system can automatically adjust signal processing parameters or trigger diagnostic routines, ensuring reliable sensor operation even when using existing connection points rather than dedicated new terminals.
Data Source
AI summary
Climate control systems that include a refrigerant leak sensor are disclosed. Embodiments may include control logic, a voltage source coupled to a switch and configured to output a constant AC voltage. The switch may be coupled to a first line input and a sensor may be coupled to the switch. The first line input may be coupled to the control logic and a blower control circuit may be coupled to the control logic. In operation, the switch may receive a signal from the sensor and the signal may indicate presence of a refrigerant in the vicinity of the sensor. Thereafter, the switch may operate to electrically couple the first line input to the voltage source. The control logic may detect the constant AC voltage at the line input and cause the blower control circuit to operate a blower to disperse the leaked refrigerant.