Motor Housing Cooling Jacket in a Fluid Pump for Dielectric Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid pumps for fuel cell systems face challenges in efficiently cooling both the fuel cell stacks and the motor, as the cooling fluid must be dielectric and separate from the motor components to prevent ion emission, leading to complex and cost-intensive additional cooling requirements.
Innovation Solution
The fluid pump incorporates a cooling fluid jacket formed in the motor housing, which fluidically connects the impeller unit's inlet and outlet sides, allowing the cooling fluid to indirectly cool the motor while maintaining dielectric properties and preventing ion emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling fluid directly flows about the stator and rotor for motor cooling, then the motor cooling efficiency is improved, but ion emission occurs and the dielectric property of the cooling fluid is lost
Solution Approach 1:
The patent introduces an intermediary cooling arrangement where the cooling fluid flows through channels in the motor housing and cooling plates that are in thermal contact with the stator and rotor, rather than directly contacting the motor components. This mediator structure transfers heat from the motor to the cooling fluid without allowing direct contact, thus preventing ion emission while maintaining effective cooling.
2Temperature
If a separate cooling system for the motor is implemented, then the motor can be cooled effectively, but the device complexity and cost increase
Solution Approach 1:
The patent merges the cooling functions by integrating the motor cooling channels into the existing cooling fluid circuit. The cooling fluid that cools the fuel cell stacks also cools the motor through thermally coupled channels in the motor housing and cooling plates, eliminating the need for a separate motor cooling system and reducing overall system complexity.
Solution Approach 2:
The cooling fluid circuit serves multiple functions: it cools both the fuel cell stacks and the motor through different pathways within the same system. The motor housing and cooling plates are designed with integrated channels that allow the universal cooling fluid to perform dual cooling tasks, reducing the need for additional dedicated cooling components.
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
This design effectively cools both the fuel cell stacks and the motor, reducing the need for additional cooling systems and enhancing motor efficiency and cooling performance, while maintaining the dielectric properties of the cooling fluid.
Implementation Method 1
the guide channel is additionally realised in regions by a cooling fluid jacket (27) formed in the motor housing (10)... the motor is then cooled with the cooling fluid delivered by means of the fluid pump (1)... further components of the motor be indirectly cooled by the cooling fluid
Data Source
AI summary
The invention relates to a fluid pump (1), which comprises an impeller unit (2) with an impeller (4) and an electric motor (6) with a motor housing (10). The impeller unit (2) comprises an inlet side (2a) with a fluid inlet (5a) and an outlet side (2b) with a fluid outlet (5b), wherein a guide channel (26) fluidically connects the inlet side (2a) and the outlet side (2b) via the impeller (4).It is substantial for the invention that the guide channel (26) is additionally realised in regions by a cooling fluid jacket (27) formed in the motor housing (10).