Portable Pump Cooling Assembly for Motor and Fluid Temperature Control

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional fluid pump systems face inefficiencies in cooling both the motor and hydraulic fluid, often requiring larger and heavier designs with more components, and lack effective temperature control mechanisms to optimize performance across varying operational conditions.

Innovation Solution

A portable fluid pump system incorporating a cooling assembly with a single fan that cools both the motor and fluid conduit, utilizing a shroud and heat exchanger conduit with temperature sensors and a controller to manage airflow and heat transfer efficiently, allowing for reduced size, weight, and improved component lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate cooling mechanisms are used for motor and fluid, then cooling effectiveness is improved, but device complexity and weight increase

Engineering Contradiction:
Improvecooling effectivenessVSAvoidnumber of cooling components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the motor cooling and fluid cooling functions into a single integrated cooling assembly. The fan draws air that simultaneously cools the motor through direct airflow and cools the fluid through the heat exchanger conduit, eliminating the need for separate cooling systems while maintaining effective temperature control for both components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The cooling assembly serves multiple functions: it cools the motor, cools the hydraulic fluid through the heat exchanger, and uses a single fan and airflow path for both purposes. This multi-functional design reduces the overall number of components while achieving comprehensive cooling effectiveness.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Temperature

If larger cooling components are used, then temperature control is improved, but portability is reduced

Engineering Contradiction:
Improvetemperature control capabilityVSAvoidsystem weight
Core Design Contradiction:
TemperatureVSWeight of moving object

Solution Approach 1:

The integration of motor cooling and fluid cooling into one compact assembly reduces the total volume and weight of cooling components compared to having separate systems. The shared fan and airflow path eliminate redundant parts, making the overall system more portable while maintaining effective temperature control.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If integrated cooling is used, then device compactness is improved, but temperature control precision may worsen

Engineering Contradiction:
Improvesystem compactnessVSAvoidtemperature control precision
Core Design Contradiction:
Device complexityVSTemperature

Solution Approach 1:

The cooling assembly incorporates temperature sensors that monitor the temperature of both the motor and the hydraulic fluid. This feedback mechanism allows the system to detect temperature changes and adjust cooling performance accordingly, maintaining precise temperature control despite the integrated compact design.

Inventive Principle:
Principle #23Feedback

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 cooling assembly effectively manages temperature for both the motor and fluid, enhancing the pump's performance and reducing contamination risks, while maintaining a compact and lightweight design.

Implementation Method 1

a heat exchanger conduit (200) positioned within the shroud and in fluid communication with the reservoir

Methodology Applied
Scientific EffectHeat exchanger: Heat Exchanger

Implementation Method 2

A portable fluid pump system incorporating a cooling assembly with a single fan that cools both the motor and fluid conduit, utilizing a shroud and heat exchanger conduit

Methodology Applied
Scientific EffectForced convection: Forced Convection

Data Source

PatentEP3259477B1Portable fluid pump system
Publication Date: 2021.07.21 ENERPAC TOOL GRP CORP
  • EP3259477B1 patent drawingFigure 1
  • EP3259477B1 patent drawingFigure 2
  • EP3259477B1 patent drawingFigure 3

AI summary

A fluid pump system includes a housing, a motor, a fan, and a fluid conduit. The housing includes a wall having a first end and a second end, and the housing defining a first axis extending between the first end and the second end. The wall extends at least partially around the first axis and at least partially encloses a chamber. The motor is at least partially positioned within the chamber. The fan is positioned proximate the first end, and the fan generates air flow through the chamber. The fluid conduit is configured to be in fluid communication with a fluid reservoir, and at least a portion of the fluid conduit is positioned within the chamber.