Encapsulated Stator Pump Motor for Corrosive Fluids
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing combined motor and pump assemblies face reduced lifespan when positioned in corrosive fluid environments due to the corrosive nature of the fluids, which affects the materials used in their manufacture.
Innovation Solution
A combined motor and pump assembly is designed with a housing that encloses both components, featuring an encapsulated stator with a pressure plate and diffuser vanes, and a rotor that is rotatable within the stator, along with an impeller that cooperates with the pressure plate and housing to pump fluid, while being protected by encapsulants to mitigate corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the pump and motor are positioned within the fluid being pumped, then the pumping efficiency is improved, but the lifespan of pump and motor components is reduced due to corrosive environment
Solution Approach 1:
A corrosion-resistant coating is applied to the pump components and motor housing that are in contact with the fluid. This coating acts as an intermediary barrier between the corrosive fluid and the underlying metal components, allowing the pump to operate efficiently within the fluid while protecting the components from corrosion and extending their lifespan.
2Duration of action of moving object
If corrosion-resistant materials are used for pump and motor components, then the lifespan is extended, but the manufacturing cost increases
Solution Approach 1:
Instead of manufacturing entire pump components from expensive corrosion-resistant materials, the patent applies corrosion-resistant coatings only to the specific surfaces that contact the corrosive fluid. This localized approach provides the necessary corrosion protection to extend component lifespan while significantly reducing manufacturing costs compared to using corrosion-resistant materials for the entire component structure.
3Ease of manufacture
If standard materials are used for pump components, then the manufacturing cost is reduced, but the components deteriorate quickly in corrosive environments
Solution Approach 1:
The patent creates a composite structure by applying a corrosion-resistant coating layer over standard, cost-effective base materials. This composite approach combines the economic advantages of standard materials with the protective properties of corrosion-resistant coatings, achieving both cost-effectiveness and improved component durability in corrosive environments.
Data Source
AI summary
A pumping apparatus includes a housing having an inlet at a first end and an outlet at an opposite second end. An encapsulated stator defines an opening and is supported by the housing. A pressure plate includes diffuser vanes formed as part of the pressure plate. The pressure plate is formed as part of the encapsulated stator. A rotor is positioned at least partially within the opening and is rotatable with respect to the stator and an impeller is coupled to the rotor and cooperates with the pressure plate and the housing to pump a fluid from the inlet to the outlet in response to rotation of the rotor.