Rain Manifold Cooling Layout for Even Electric Motor Heat Removal
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Solution Overview
Problem
Electric motors in vehicles experience excessive heat due to inefficiencies, leading to potential damage or failure, and existing coolant distribution methods often result in uneven cooling and require complex sealing processes.
Innovation Solution
A multiple-discharge rain manifold system with vertically positioned vias on the electric motor housing, creating a "rainfall" pattern of coolant fluid to evenly distribute cooling across the motor, independent of pump pressure, and eliminating the need for individual caps or freeze plugs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional coolant distribution methods are used, then the cooling system can be implemented, but the coolant distribution is uneven and the sealing process becomes complex
Solution Approach 1:
The manifold is segmented into multiple discharge regions with individually adjustable nozzles, allowing each section to be optimized for uniform coolant distribution. The segmentation of the sealing approach into modular sealing elements simplifies the overall sealing process while maintaining effectiveness across the entire manifold interface.
Solution Approach 2:
The nozzle configuration is made dynamically adjustable to optimize coolant flow patterns and distribution uniformity. The adjustable nozzles can be positioned and angled to achieve even coolant coverage across the manifold, eliminating the need for complex fixed sealing arrangements.
2Reliability
If high pump pressure is used to deliver coolant, then coolant can reach all areas, but the system becomes more complex and energy-intensive
Solution Approach 1:
The manifold utilizes gravitational potential energy by positioning the coolant inlet at a higher elevation than the discharge nozzles. This vertical dimension allows coolant to flow through the manifold channels and exit through gravity-assisted discharge, reducing reliance on high pump pressure while maintaining reliable coolant delivery to all areas.
Solution Approach 2:
The system employs hydraulic principles by designing the manifold channels and nozzles to utilize fluid pressure and gravity for natural flow distribution. The hydraulic design ensures reliable coolant delivery through properly sized channels and strategically positioned discharge points, eliminating the need for complex pressurization systems.
3Reliability
If multiple caps or freeze plugs are used to seal the manifold, then the manifold can be sealed, but the manufacturing process becomes more complex
Solution Approach 1:
The manifold design merges the sealing function into the main manifold body through integrated sealing surfaces and gasket arrangements. By combining the sealing function with the manifold structure itself, the need for multiple separate caps and freeze plugs is eliminated, simplifying manufacturing while maintaining reliable sealing.
Solution Approach 2:
The manifold is designed with multi-functional sealing surfaces that simultaneously provide structural support and sealing functions. The integrated sealing design allows a single manufacturing process to create both the coolant distribution channels and the sealing interfaces, reducing the number of manufacturing steps and components required.
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
The system provides even coolant distribution, enhancing motor cooling, increasing performance, and extending motor life while simplifying the cooling process and reducing the complexity of sealing.
Implementation Method 1
a multiple-discharge rain manifold for electric motor cooling... vertical jets configured to target one or more portions of the electric motor... coolant fluid flow along a flow path of the manifold... removing heat generated during operation
Implementation Method 2
a portion of the input power results in heating of the electric motor... coolant fluid... removing heat from the electric motor... enhancing motor cooling
Data Source
AI summary
An apparatus includes a housing configured to receive at least a portion of an electric motor. The apparatus also includes a manifold disposed on an upper surface of the housing. The manifold includes a number of vertical jets configured to target one or more portions of the electric motor, the vertical jets includes multiple vias extending between (i) a cavity within the manifold and (ii) an interior portion of the housing. The cavity within the manifold is defined by (i) at least a portion of the upper surface of the housing, (ii) one or more side walls extending from the upper surface of the housing, and (iii) a cover lid coupled to the one or more side walls and configured to cover the cavity and the vias.