Sail Drive Refrigerant Path Switching for Flexible Mounting
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Solution Overview
Problem
When the arrangement direction of the upper unit with respect to the lower unit in a sail drive is changed, the flow passage of lubricating oil is altered, leading to insufficient cooling and potential overheating of the sail drive.
Innovation Solution
A sail drive configuration with a lower unit, an upper unit, and an intermediate unit that switches the flow passage of refrigerant between the lower and upper units, ensuring continuous circulation and cooling regardless of the arrangement direction change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the arrangement direction of the upper unit is changed with respect to the lower unit, then the mountability on a ship is improved, but the refrigerant flow passage is altered causing insufficient cooling and potential overheating
Solution Approach 1:
The flow passage switching mechanism dynamically adjusts the refrigerant flow path based on the arrangement direction of the upper unit. By making the flow passage configuration adaptable rather than fixed, the system maintains effective cooling regardless of whether the upper unit is arranged in the original or reversed direction, thus resolving the contradiction between mountability flexibility and cooling efficiency
Solution Approach 2:
A flow passage switching mechanism acts as an intermediary between the upper and lower units. This intermediary component redirects the refrigerant flow to ensure proper circulation and cooling in the lower unit, regardless of how the upper unit is arranged, thereby maintaining thermal performance while enabling flexible installation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents overheating of the sail drive by maintaining effective refrigerant circulation and cooling even when the upper unit's arrangement direction is changed relative to the lower unit.
Implementation Method 1
a refrigerant flowing between the lower unit and the upper unit via the intermediate unit is cooled in the lower unit
Implementation Method 2
lubricating oil as a refrigerant flowing inside the sail drive
Data Source
AI summary
The sail drive includes a lower unit, an upper unit that is disposed above the lower unit such that an arrangement direction can be changed with respect to the lower unit, and an intermediate unit that is disposed between the lower unit and the upper unit. A refrigerant flowing between the lower unit and the upper unit via the intermediate unit is cooled in the lower unit. The intermediate unit switches a flow passage of the refrigerant.