Air conditioner
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Solution Overview
Problem
Conventional air conditioners experience high compressor start/stop frequencies due to fixed update intervals for operating frequency control, leading to increased load and reduced efficiency when air conditioning loads are low and compressor performance is high.
Innovation Solution
The air conditioner incorporates a controller that shortens the update interval for compressor operating frequency adjustments when both low air conditioning load and high compressor performance conditions are met, allowing for more precise timing of compressor operations to prevent temporary stops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed update interval is used for compressor operating frequency control, then the control system is simple and stable, but the compressor start/stop frequency increases when air conditioning load is low and compressor performance is high
Solution Approach 1:
The update interval for compressor operating frequency control is changed from a fixed value to a dynamic value that varies based on operating conditions. When air conditioning load is low and compressor performance is high, the update interval is shortened to prevent frequent start/stop cycles. When load is high or performance is low, the update interval is extended. This dynamic adjustment resolves the contradiction by adapting the control frequency to match actual system needs.
Solution Approach 2:
The control parameter (update interval) is changed based on operating conditions. The system monitors air conditioning load and compressor performance, then adjusts the update interval parameter accordingly. This parameter change allows the system to maintain stability while reducing unnecessary start/stop cycles under specific operating conditions.
2Reliability
If the update interval is shortened to reduce compressor start/stop frequency, then compressor operation stability improves, but control system complexity increases
Solution Approach 1:
The control system adjusts the update interval parameter based on monitored operating conditions (air conditioning load and compressor performance). This parameter change approach improves reliability without requiring a complete redesign of the control system, as it builds upon the existing fixed-interval control framework.
Solution Approach 2:
The system uses feedback from sensors monitoring air conditioning load and compressor performance to dynamically adjust the update interval. This feedback mechanism allows the control system to adapt to changing conditions while maintaining a relatively simple overall architecture, resolving the contradiction between improved reliability and system complexity.
Data Source
AI summary
An air conditioner that performs an air conditioning operation in an indoor space includes a compressor and a controller that controls an operating frequency of the compressor at a predetermined update interval in accordance with an air conditioning load in the indoor space. The controller shortens the update interval when a first condition indicating that the air conditioning load is low and a second condition indicating that a performance of the compressor to the air conditioning load is high are satisfied.