Hubless Propeller Cooling via Corrosion-Resistant Flow Guide Housing

A corrosion-resistant steel flow guide housing acts as an intermediary barrier between the seawater coolant and the permanent magnets, allowing thermal energy to be transferred through the housing wall while preventing direct contact between seawater and magnetic components. The housing includes cooling channels that enable efficient heat dissipation while the corrosion-resistant material protects internal components.

The flow guide housing functions as a protective shell that encloses the permanent magnets and rotor assembly. This shell is made of corrosion-resistant steel to withstand seawater environment while maintaining thermal conductivity for effective cooling. The housing design allows thermal energy to pass through while physically isolating sensitive components from corrosive seawater.

The flow guide housing serves as a mediator that transfers thermal energy from the permanent magnets to the cooling seawater without allowing direct contact. The housing wall thickness and material properties are optimized to maintain adequate thermal conductivity for cooling while providing sufficient thermal isolation to protect magnet strength, and corrosion resistance to preserve magnetic force over time.

The cooling system is segmented into distinct functional zones: the flow guide housing contains cooling channels for heat dissipation, while the permanent magnets are enclosed in a protected space within the housing. This segmentation allows the cooling function to be performed efficiently while the magnets remain isolated from direct seawater exposure, maintaining their magnetic properties.

The flow guide housing performs multiple functions simultaneously: it guides the water jet for propulsion, provides structural support for the rotor assembly, contains cooling channels for heat dissipation, and acts as a corrosion barrier protecting the permanent magnets. By integrating these functions into a single component made of corrosion-resistant steel, the design achieves reliable protection without adding separate protective structures.

The cooling system and corrosion protection functions are merged into the flow guide housing structure. The housing includes integrated cooling channels that utilize the seawater flow for both propulsion and cooling purposes, while the corrosion-resistant material provides protection throughout. This merging eliminates the need for separate cooling systems and protective barriers, maintaining structural simplicity.