Refrigerant cycle system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing refrigerant cycle systems face increased complexity and construction challenges due to limited flexibility in connecting outdoor and indoor units, leading to longer and more costly wiring configurations when trying to connect multiple indoor units to a single outdoor unit.
Innovation Solution
A refrigerant cycle system that includes a heat source unit, first and second power feed units, and transmission lines connecting them in series, allowing for auxiliary power feeding to indoor units when the main power source is interrupted, thereby increasing the degree of freedom in system construction and reducing wiring complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple indoor units are connected in parallel to a single outdoor unit via communication lines, then the system can operate with standardized wiring configurations, but the construction flexibility and degree of freedom are limited
Solution Approach 1:
The system segments the indoor units into multiple groups (first utilization unit group and second utilization unit group), each associated with a dedicated power feed unit. This segmentation allows independent wiring configurations for each group, enabling flexible construction while maintaining standardized connection protocols within each group.
Solution Approach 2:
Power feed units are introduced as intermediary devices between the outdoor unit and indoor units. These intermediaries manage power distribution and communication, allowing the system to support diverse wiring configurations and building layouts without requiring direct parallel connections from all indoor units to the outdoor unit.
2Adaptability or versatility
If the outdoor unit and power feed units are connected in series with transmission lines, then the construction flexibility and placement freedom are increased, but the system complexity and wiring length increase
Solution Approach 1:
The system employs dynamic power feed control where the outdoor unit can selectively activate specific power feed units based on which indoor units are operational. This dynamic control optimizes power distribution through the series-connected transmission lines, managing complexity by only activating necessary pathways rather than maintaining all possible connections.
Solution Approach 2:
The transmission lines serve multiple functions: they provide power distribution, carry communication signals, and enable control of multiple indoor units through series connection. This multi-functionality reduces the need for separate dedicated wiring for each function, thereby managing overall system complexity while enabling flexible placement.
3Reliability
If auxiliary power feed units are added to provide backup power to indoor units, then the system reliability during power interruption is improved, but the device complexity and construction cost increase
Solution Approach 1:
The power feed units are designed to automatically detect power interruptions and switch to auxiliary power mode without requiring complex external control systems. This self-service capability simplifies the overall system architecture by eliminating the need for additional complex control mechanisms while maintaining reliability.
Solution Approach 2:
The system incorporates auxiliary power feed units that are pre-configured and ready to provide backup power before any power interruption occurs. This beforehand cushioning ensures continuous operation of critical indoor units during power failures, improving reliability without requiring complex real-time decision-making systems.
Data Source
AI summary
The degree of freedom when a refrigerant cycle system is constructed in a building or the like is increased. A refrigerant cycle system according to the present disclosure includes a refrigerant cycle, a first power feed unit, a second power feed unit, a first transmission line, and a second transmission line. The power feed unit feeds auxiliary power to a utilization unit of which a power source has been interrupted. The first transmission line connects a heat source unit and the first power feed unit to each other. The second transmission line connects the first power feed unit and the second power feed unit to each other. The second power feed unit is connected to the heat source unit via the first power feed unit.