Gravity-Controlled Constant-Pressure Air Canister

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Solution Overview

Problem

Conventional air accumulation canisters fail to provide effective mass storage and stable supply of constant-pressure air due to limitations in internal pressure regulation, leading to varying air pressure when air is depleted.

Innovation Solution

A gravity-controlled constant-pressure and pressure-regulation device featuring a canister with a movable weight block and seal head, where the weight block's movement balances gravity and internal air pressure to maintain constant internal pressure and ensure stable air supply, constructed with a metal layer, epoxy resin, and plastic sheet layers to prevent air leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If air is continuously pumped into a fixed-volume canister, then air density increases, but internal pressure increases beyond structural limits

Engineering Contradiction:

Improveair storage capacityVSAvoidinternal pressure

Core Design Contradiction:

Quantity of substanceVSStress or pressure

Solution Approach 1:

The invention introduces a movable weight block that dynamically adjusts the internal volume of the canister. As air is pumped in, the weight block moves upward, expanding the volume to maintain constant pressure. This dynamic volume adjustment resolves the contradiction between storing more air and maintaining structural pressure limits.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the volume parameter dynamically in response to air quantity. The weight block's position changes the effective volume of the canister, allowing the system to accommodate varying air quantities while maintaining constant pressure, thus resolving the contradiction between air storage capacity and pressure control.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If air is released from the canister, then air quantity decreases, but internal pressure varies and becomes low when air is depleted

Engineering Contradiction:

Improveair supply amountVSAvoidair pressure stability

Core Design Contradiction:

Quantity of substanceVSStress or pressure

Solution Approach 1:

During air release, the weight block dynamically moves downward as air quantity decreases, reducing the internal volume to compensate for the lost air. This dynamic adjustment ensures that pressure remains constant throughout the discharge process, resolving the contradiction between air supply amount and pressure stability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The weight block acts as a feedback mechanism that responds to changes in air quantity by adjusting volume. When air is released and pressure drops, the weight block moves to reduce volume and maintain pressure, creating a self-regulating system that resolves the contradiction between air supply and pressure stability.

Inventive Principle:

Principle #23Feedback

3Stress or pressure

If a movable weight block is introduced to maintain constant pressure, then pressure stability improves, but device complexity increases

Engineering Contradiction:

Improvepressure constancyVSAvoidcanister structure

Core Design Contradiction:

Stress or pressureVSDevice complexity

Solution Approach 1:

The weight block is a passive, self-regulating component that automatically adjusts volume based on air quantity without requiring external control systems. The gravity-driven mechanism self-adjusts to maintain constant pressure, achieving pressure stability while minimizing added complexity compared to active control systems.

Inventive Principle:

Principle #25Self-service

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

Enables efficient mass storage and continuous supply of air at a constant pressure, preventing internal pressure fluctuations and ensuring stable airflow regardless of the air volume within the canister.

Implementation Method 1

The weight block is movable upward and downward inside the canister by being acted upon by a gravity force of weight thereof and a lifting force induced by an internal pressure inside the canister

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 2

a lifting force induced by an internal pressure inside the canister

Methodology Applied

Scientific EffectPressure: Pressure Increase

Implementation Method 3

The seal head is provided with sealing rings to seal between the seal head and the inner surface of the metal layer to prevent air leakage

Methodology Applied

Scientific EffectSealing:

Data Source

PatentUS7677269B2Gravity-controlled constant-pressure and pressure-regulation device

Publication Date: 2010.03.16 LIN MING HUNG

AI summary

A gravity-controlled constant-pressure and pressure-regulation device includes a canister, a weight block, and a seal head. The canister includes a metal layer, an epoxy resin layer, and a plastic sheet layer. The metal layer serves as an inner lining. The epoxy resin layer surrounds an outer circumference of the metal layer. The plastic sheet layer surrounds an outer circumference of the epoxy resin layer. The weight block is movably received in the canister. The metal layer has an inner surface movably and receivingly engages the seal head. The weight block is mounted to the seal head. The weight block is movable upward and downward inside the canister by being acted upon by a gravity force of weight thereof and a lifting force induced by an internal pressure inside the canister to effect mass storage of air inside the canister and stable supply air at constant pressure.