Dual-Chamber Vacuum Container With Linked Pistons

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Solution Overview

Problem

Existing vacuum freshness preservation containers require manual operation for each vacuumization cycle, resulting in low efficiency and inefficiency in maintaining a vacuum state.

Innovation Solution

A vacuum freshness preservation container with symmetrical chambers and linked pistons that move in opposite directions, utilizing a linkage mechanism and air discharge structure to alternately press pistons, continuously maintaining a vacuum state without manual operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual vacuumization is used with a single chamber and piston, then the container can be vacuumized, but the operation efficiency is low and time-consuming

Engineering Contradiction:

Improvevacuumization efficiencyVSAvoidtime for continuous manual operation

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The single chamber is divided into two symmetric chambers with two pistons, allowing parallel operation. Each chamber can be pressed independently or simultaneously, doubling the vacuumization capacity and reducing the time required to achieve vacuum state.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Two chambers and pistons are combined into a single integrated structure with shared sealing and vacuum space. The linkage mechanism merges the motion of both pistons, allowing synchronized operation to maintain vacuum state continuously without requiring sequential manual intervention.

Inventive Principle:

Principle #5Merging (Combining)

2Productivity

If additional vacuumizing equipment is introduced, then vacuumization capability is improved, but device complexity and production cost increase

Engineering Contradiction:

Improvevacuumization capabilityVSAvoidstructural complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The pressing mechanism serves dual purposes: it directly compresses food items and simultaneously drives the pistons to create vacuum. This multi-functionality eliminates the need for separate vacuum pumps or additional vacuumizing equipment, simplifying the overall device structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses its own pressing mechanism to generate vacuum pressure, rather than requiring external vacuum equipment. The pistons are driven by the same user input that compresses the food, making the system self-sufficient and reducing overall device complexity.

Inventive Principle:

Principle #25Self-service

3Productivity

If a single piston is used for vacuumization, then the structure is simple, but the vacuum state cannot be maintained continuously

Engineering Contradiction:

Improvecontinuous vacuum maintenanceVSAvoidoperational convenience

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The two pistons operate in alternating periodic cycles, with one piston returning to its starting position while the other continues the vacuumizing action. This periodic alternation ensures continuous vacuum maintenance without requiring the user to reset a single piston repeatedly.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The linkage mechanism ensures that at least one piston is always in the vacuumizing stroke, maintaining continuous useful action. When one piston completes its cycle and returns to initial position, the other piston is already positioned to continue the vacuumization without interruption.

Inventive Principle:

Principle #20Continuity of useful action

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

This design enhances vacuumizing efficiency, maintains the container's flat appearance, and reduces production costs by allowing continuous vacuumization without additional tools, improving usability and preservation effectiveness.

Implementation Method 1

each chamber has an air outlet which communicates with an interior of the container body and where a first check valve is disposed

Methodology Applied

Scientific EffectCheck valve one-way flow: Valve

Implementation Method 2

the container cover is provided with a linkage mechanism such that the two pistons move in opposite directions

Methodology Applied

Scientific EffectMechanical linkage: Mechanical Advantage

Implementation Method 3

when the piston moves up, a negative pressure is generated in a closed cavity formed between the piston and a bottom wall of the chamber to open the first check valve

Methodology Applied

Scientific EffectNegative pressure generation: Pressure Gradient

Data Source

PatentUS11370592B2Vacuum freshness preservation container that can be pressed on two sides

Publication Date: 2022.06.28 SHENZHEN JINGDING PACKAGING MATERIALS CO LTD

AI summary

A vacuum freshness preservation container that can be pressed on two sides provided in this application includes a container body and container cove. The container cover has chambers disposed symmetrically, a piston is slidably disposed in each chamber, and each chamber has an air outlet which communicates with an interior of the container body and where a first check valve is disposed. The piston is provided with an air discharge structure that communicates the chamber with an outside when the piston moves toward the first check valve, and the container cover is provided with a linkage mechanism such that the two pistons move in opposite directions. By alternately pressing pistons in two chambers, the chambers always keep in a vacuumizing state, thereby achieving a higher efficiency.