Pressure-Booster Output Stabilizer for Stable Secondary Pressure

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Solution Overview

Problem

Conventional pressure boosters face rapid fluid consumption and pressure drop when the discharge rate is exceeded, leading to insufficient pressure supply and reduced lifespan due to high operating speeds.

Innovation Solution

A pressure-booster output stabilizer configuration with a first and second cylinder, each divided by a piston, and a shared piston rod, where primary pressure is supplied to one chamber and secondary pressure is maintained in another, allowing stable output and reduced operating speed to conserve fluid.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the pressure booster operates at higher speed to meet fluid demand, then the fluid supply response improves, but the consumption of pressurized fluid increases and the life of the pressure booster shortens

Engineering Contradiction:
Improvefluid supply responseVSAvoidpressurized fluid consumption
Core Design Contradiction:
ProductivityVSLoss of substance

Solution Approach 1:

The device is divided into two separate cylinders (first cylinder and second cylinder) with distinct functions: the first cylinder performs pressure boosting while the second cylinder performs fluid storage and pressure stabilization. This segmentation allows the pressure booster to operate continuously at optimal speed without rapid fluid depletion, as the second cylinder acts as a buffer that decouples the boosting operation from the fluid consumption rate.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the pressure booster operates at higher speed to meet fluid demand, then the fluid supply response improves, but the life of the pressure booster shortens

Engineering Contradiction:
Improvefluid supply responseVSAvoidpressure booster life
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

By separating the pressure boosting function (first cylinder) from the fluid storage function (second cylinder), the system allows the pressure booster to operate continuously at a moderate, life-extending speed while the second cylinder handles the high-rate fluid delivery to meet demand.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The second cylinder acts as an intermediary between the pressure booster and the fluid pressure device. It receives pressurized fluid from the first cylinder and supplies it to the fluid pressure device, thereby protecting the pressure booster from direct high-speed operation and extending its operational life.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Quantity of substance

If pressurized fluid is stored in a tank and supplied to the fluid pressure device, then the fluid storage capacity increases, but the pressure in the tank drops sharply when fluid usage exceeds discharge rate

Engineering Contradiction:
Improvefluid storage capacityVSAvoidtank pressure stability
Core Design Contradiction:
Quantity of substanceVSStress or pressure

Solution Approach 1:

The system separates the storage function (second cylinder with third and fourth chambers) from the pressure boosting function (first cylinder). The second cylinder is specifically designed to maintain pressure stability while storing fluid, with its chambers and pistons configured to prevent sharp pressure drops even when fluid usage exceeds the discharge rate from the pressure booster.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The second cylinder serves as a pressure-stabilizing intermediary between the pressure booster and the fluid pressure device. It buffers pressure fluctuations and maintains stable pressure output even when the fluid demand exceeds the booster's discharge rate, preventing sharp pressure drops that would occur in a direct tank-supply configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 stabilizer maintains stable secondary pressure output, reduces fluid consumption, and extends the lifespan of the pressure booster by slowing down its operating speed.

Implementation Method 1

a first piston (12b) and a second piston (14b) which are coupled to each other by a shared piston rod (16), wherein the inside of the first cylinder (12) is divided into a first chamber (24a) and a second chamber (24b) by the first piston (12b), and the inside of the second cylinder (14) is divided into a third chamber (26a) and a fourth chamber (26b) by the second piston (14b)

Methodology Applied
Scientific EffectPascal's Law: Pascal's Law

Data Source

PatentEP3885584B1Assembly with pressure-booster output stabilizer and fluid pressure booster
Publication Date: 2022.11.23 SMC CORP
  • EP3885584B1 patent drawingFigure 1
  • EP3885584B1 patent drawingFigure 2
  • EP3885584B1 patent drawingFigure 3

AI summary

A pressure-booster output stabilizer includes: a first cylinder (12) having therein a first chamber (24a) and a second chamber (24b) separated by a first piston (12b); a second cylinder (14) having therein a third chamber (26a) and a fourth chamber (26b) separated by a second piston (14b); and a piston rod (16) configured to couple the first piston and the second piston. The primary pressure of a pressure booster (70) is supplied to the first chamber, the secondary pressure of the pressure booster is supplied to the fourth chamber, and the pressurized fluid is taken out from the fourth chamber.