Air conditioning system, and indoor unit of same
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Solution Overview
Problem
Existing air conditioning systems face inefficiencies in power consumption and complexity in refrigerant leak detection, as refrigerant leak sensors are often energized regardless of refrigerant filling amount, leading to unnecessary power usage and complicated control mechanisms.
Innovation Solution
The air conditioning system incorporates a refrigerant leak sensor that can switch between energized and non-energized states based on the refrigerant filling amount, with the indoor control device determining the appropriate state based on the type, number, or capacity of the outdoor unit, minimizing power consumption and simplifying control by performing energization control during startup rather than during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the refrigerant leak sensor is continuously energized to ensure reliable leak detection, then the detection reliability is improved, but the power consumption increases
Solution Approach 1:
The refrigerant leak sensor's energization state is made dynamic rather than static. The control device adjusts the sensor's energization based on real-time refrigerant filling amount information, switching between energized and non-energized states to balance detection reliability with power consumption efficiency
Solution Approach 2:
The control parameters for sensor energization are changed based on refrigerant filling amount conditions. When refrigerant filling amount is sufficient, the sensor is de-energized to save power; when refrigerant filling amount is low, the sensor is energized to ensure detection reliability, thus adapting the system operation to changing conditions
2Reliability
If the refrigerant leak sensor is energized at all times to detect leaks, then the detection capability is maintained, but the control complexity increases
Solution Approach 1:
The system uses its own operational parameters (refrigerant filling amount information) to automatically control the sensor energization. The control device determines energization status based on pre-set conditions related to refrigerant filling amount, eliminating the need for external or complex control mechanisms
Solution Approach 2:
The control device pre-sets energization control conditions based on refrigerant filling amount thresholds before operation begins. This preliminary configuration simplifies real-time control by using predetermined criteria rather than requiring complex real-time decision-making algorithms
Data Source
AI summary
This air conditioning system includes a refrigerant circuit including an indoor heat exchanger of an indoor unit and an outdoor heat exchanger of an outdoor unit, and a detection unit capable of detecting a refrigerant leaking from the indoor unit. The detection unit is capable of switching between an energized state and a non-energized state on the basis of information on a refrigerant filling amount by which the refrigerant circuit is filled with the refrigerant.