Integrated Hydraulic Power Supply With Shared Cooling Ducts

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Solution Overview

Problem

In the automotive and machinery fields, the lack of integration among components in power supply units leads to issues such as cooling defects, increased risk of breakage, noise generation, and exposure to the ambient environment, particularly due to bulky and non-integrated logic and power links.

Innovation Solution

A system comprising a primary machine, a hydraulic machine, and a frequency converter housed in an assembly casing with a shared cooling circuit that uses the same coolant to cool all components, featuring inner ducts for coolant circulation between the casings of the primary machine, hydraulic machine, and frequency converter, which are secured together to enhance integration and reduce noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If components are integrated into a single assembly casing with shared cooling circuit, then reliability and protection from environment improve, but device complexity increases

Engineering Contradiction:
Improveprotection from environmentVSAvoidintegration structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the primary machine, hydraulic machine, and frequency converter into a single integrated assembly casing with a shared cooling circuit. Multiple components that would traditionally be separate are combined into one unit, eliminating the need for multiple individual casings and cooling systems. This merging provides unified protection from the environment while managing thermal loads across all components through a common coolant system.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If non-integrated components with separate cooling circuits are used, then device complexity is reduced, but cooling effectiveness and reliability deteriorate

Engineering Contradiction:
Improveseparate componentsVSAvoidcooling effectiveness
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The cooling circuit is designed as a universal system that serves multiple functions: it cools the primary machine, the hydraulic machine, and the frequency converter simultaneously. The same coolant traverses through ducts in all three components, providing efficient thermal management across the entire assembly. This multi-functional approach ensures consistent cooling effectiveness without requiring separate cooling systems for each component.

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

3Ease of manufacture

If components are housed separately, then ease of manufacture is improved, but noise generation and exposure to ambient environment increase

Engineering Contradiction:
Improveindividual componentsVSAvoidnoise generation
Core Design Contradiction:
Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent implements a nested structure where the hydraulic machine and frequency converter are housed within or alongside the primary machine's casing. The assembly casing acts as an outer container that encloses all components, creating a nested arrangement. This nesting provides acoustic insulation that reduces noise generation and transmission, while also protecting all components from the ambient environment through a single unified enclosure.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 shared cooling circuit improves component integration, reduces noise and bulk, and minimizes the risk of breakage by protecting components from the environment, while using a single fluid for both hydraulic operations and cooling, thus lowering costs and enhancing reliability.

Implementation Method 1

a cooling circuit, suitable for a same coolant to traverse a plurality of ducts suitable for cooling the primary machine, the frequency converter and the hydraulic machine

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentUS20240044279A1Power supply comprising a hydraulic machine exhibiting improved integration
Publication Date: 2024.02.08 POCLAIN HYDRAULICS IND
  • US20240044279A1 patent drawing
  • US20240044279A1 patent drawing
  • US20240044279A1 patent drawing

AI summary

A system having a primary machine, a hydraulic machine, and a frequency converter disposed in an assembly casing. The system further includes a cooling circuit, suitable for a same coolant to traverse a plurality of ducts suitable for cooling the primary machine, the frequency converter, and the hydraulic machine.