Dynamic Fluid Device Parallel Pump Distributor

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Solution Overview

Problem

Hydraulic systems with fixed flow rate pumps face inefficiencies due to excessive energy consumption and anomalous heating when not all user means are in use, lack of priority feeding, and failure to supply reduced flow rates, leading to energy loss and system downtime if one pump fails.

Innovation Solution

A dynamic fluid device with parallel pumps and a distributor system that adjusts flow rates based on user demand and priority, using a cylindrical distributor element with sliding chambers and valves to manage oil flow, incorporating load-sensing signals to control valve positions and ensure efficient distribution and storage of pressurized oil.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pump is sized to supply flow for heaviest conditions, then sufficient flow is guaranteed under maximum demand, but excessive energy is consumed and oil is discharged when demand is low

Engineering Contradiction:

Improveflow supply reliabilityVSAvoidpump energy consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements a dynamic fluid distribution system where a single pump operates continuously but the distribution of its output is dynamically adjusted based on real-time demand. The distributor device redirects excess oil to auxiliary reservoirs instead of discharging it, allowing the pump to maintain reliable flow for peak conditions while energy is only consumed for actual work plus minimal redistribution losses.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Instead of discharging excess oil to waste, the system recovers it by redirecting to auxiliary reservoirs through the distributor device. This recovered oil is then available for future use, eliminating the energy waste associated with both pumping and discharging unused oil.

Inventive Principle:

Principle #34Discarding and recovering

2Device complexity

If a single pump supplies all user means, then device complexity is reduced, but the system stops working completely if the pump fails

Engineering Contradiction:

Improvehydraulic system complexityVSAvoidsystem operational reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system segments the hydraulic circuit into multiple independent pathways through the distributor device, which can direct oil to different user means or to auxiliary reservoirs. This segmentation allows the system to maintain functionality even if one pathway is blocked or if the pump fails, as oil can be redistributed to essential functions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The auxiliary reservoirs act as beforehand cushioning by storing oil in advance. If the pump fails or demand fluctuates, these pre-filled reservoirs provide immediate backup supply to critical user means, ensuring continuous operation without complete system failure.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If excess oil is discharged to a discharge point, then the hydraulic system can handle variable demand, but anomalous heating occurs due to unused pressurized oil

Engineering Contradiction:

Improvedemand adaptabilityVSAvoidoil temperature

Core Design Contradiction:

Adaptability or versatilityVSTemperature

Solution Approach 1:

The system recovers excess oil that would otherwise be discharged by redirecting it to auxiliary reservoirs through the distributor device. This prevents the anomalous heating caused by discharging pressurized oil while maintaining the system's ability to adapt to variable demand through dynamic redistribution.

Inventive Principle:

Principle #34Discarding and recovering

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

Reduces energy losses by optimizing oil flow according to user needs, prioritizes critical functions, and maintains system functionality even if one pump fails, by dynamically adjusting flow rates and redirecting excess oil to storage.

Implementation Method 1

distributor means (4) that are interposed amongst said first pumping means (2), second pumping means (3) and user means (PR1, PR2 and EF) and connected to them

Methodology Applied

Scientific EffectHydraulic distribution:

Implementation Method 2

pressure is detected inside the distributor and transmitted to the valve which, according to the specific requirements of pressurised oil modifies the passage hole

Methodology Applied

Scientific EffectPressure detection:

Implementation Method 3

the valve which, according to the specific requirements of pressurised oil modifies the passage hole to the distributor and, hence, the available flow of pressurised oil to the user means

Methodology Applied

Scientific EffectPressure-controlled flow regulation:

Implementation Method 4

the sum of the flows of the single pumps when they are both working comes together in this one single additional pipe

Methodology Applied

Scientific EffectHydraulic flow summation:

Data Source

PatentEP1911979B1Dynamic fluid device

Publication Date: 2011.08.24 STUDIO TECNICO 6 M

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AI summary

The dynamic fluid device (1) comprises first pumping means (2) and second pumping means (3) arranged in parallel with each other to pump a pressurised fluid to user means (PR1, PR2, EF); distributor means (14) interposed amongst said first pumping means (2), second pumping means (3) and said user means (PR1, PR2, EF) and connected to them with connection means, said distributor means (14) being arranged to connect singly and/or jointly and/or according to predetermined sequences, said first pumping means (2) and/or said second pumping means (3) to said user means (PR1, PR2, EF).