External Air Cooling Circuit for Electrically Operated Displacement Pumps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrically operated positive displacement pumps face challenges in efficiently cooling the electric motor and control components, which generate significant heat during operation, leading to potential overheating and reduced performance.
Innovation Solution
A cooling system is implemented that actively blows cooling air over the motor and control housings, utilizing a fan assembly and thermally conductive materials to facilitate efficient heat transfer, with a cooling circuit extending around the exterior of the motor housing and between the motor and control housings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electric motor and control components are housed in a compact pump assembly, then the pump achieves higher integration and productivity, but heat dissipation becomes insufficient leading to overheating
Solution Approach 1:
The cooling circuit extends about the exterior of the motor housing in a circumferential path, utilizing the external surface area of the housing for heat dissipation. This dimensional approach moves the cooling function from internal to external space, allowing efficient heat removal without increasing internal component volume or compromising pump integration.
2Productivity
If the pump operates at higher speeds and flow rates, then productivity increases, but heat generation from the motor and control components increases leading to potential overheating
Solution Approach 1:
The cooling system captures the harmful heat generated by high-speed motor and control component operation and converts it into a manageable thermal flow through the cooling circuit. The fan assembly directs air flow through the circuit extending about the motor housing, transforming waste heat into a controlled heat dissipation process that enables sustained high-speed operation.
3Temperature
If a cooling system is added to the pump assembly, then heat dissipation improves, but device complexity increases
Solution Approach 1:
The cooling circuit is integrated with the existing motor housing structure, utilizing the housing itself as part of the cooling pathway. The circuit extends about the exterior of the motor housing rather than requiring a separate cooling chamber or complex internal channels, merging the structural housing function with the thermal management function.
Solution Approach 2:
The motor housing serves dual functions: providing structural support and enclosure for the motor components, and serving as a thermal pathway for the cooling circuit. This multi-functionality eliminates the need for dedicated cooling structures, reducing overall device complexity while maintaining effective heat dissipation.
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 configuration enhances heat dissipation, allowing for longer and more efficient operation of the pump at higher speeds and flow rates, reducing the risk of overheating and improving pumping efficiency.
Implementation Method 1
a fan assembly configured to blow air through the cooling circuit
Implementation Method 2
a fan assembly configured to blow air through the cooling circuit
Implementation Method 3
an output from the fan assembly contacts both the first thermally conductive wall and the second thermally conductive wall
Data Source
AI summary
An electrically operated displacement pump includes an electric motor having a stator and a rotor. The rotor is connected to the fluid displacer to power pumping by the fluid displacer. A cooling circuit extends at least partially about an exterior of a motor housing that houses the electric motor. A fan assembly blows cooling air through the cooling circuit.