Three-Chamber Squeeze Bottle with One-Way Valves
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Solution Overview
Problem
Existing squeeze bottles allow air into the container during dispensing, leading to contamination, reduced shelf life, clogged nozzles, and inefficient liquid distribution, with two-chamber designs often trapping liquid away from the nozzle and being costly to produce.
Innovation Solution
A three-chamber squeeze bottle design with a top cap having a one-way valve for liquid egress, a bottom cap for air ingress, and a sealed chamber in between, ensuring all liquid is forced to the top and minimizing air exposure, using airtight bags and a plunger to prevent entanglement and improve dispensing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-chamber design with air bladder is used to force liquid out, then liquid can be dispensed, but liquid becomes trapped far from the nozzle and cannot be dispensed
Solution Approach 1:
The patent divides the bottle interior into three separate chambers: a liquid chamber containing the liquid, an air chamber for air supply, and a vacuum chamber to prevent air ingress. This segmentation prevents liquid from being trapped away from the nozzle by ensuring the air and liquid remain in separate, controllable spaces, allowing the air to be delivered directly to the nozzle without displacing liquid from its path.
Solution Approach 2:
The patent introduces a vacuum chamber as an intermediary space between the liquid chamber and the external environment. This vacuum chamber acts as a mediator that prevents air from entering the liquid chamber directly, while still allowing the air chamber to supply air to the nozzle. The vacuum chamber thus mediates the interaction between air and liquid, preventing harmful mixing while enabling controlled dispensing.
2Reliability
If the bottle is made opaque to prevent liquid exposure to air, then contamination is reduced, but aesthetic appeal is compromised
Solution Approach 1:
The patent segments the bottle into functional chambers (liquid chamber, air chamber, vacuum chamber) that can be independently managed. This allows the liquid to be contained and protected from air ingress through the vacuum chamber seal, while the outer bottle structure can be transparent for aesthetic purposes. The segmentation enables protection without compromising appearance.
Solution Approach 2:
The patent creates a vacuum environment (inert atmosphere without oxygen) in the vacuum chamber to prevent air ingress into the liquid chamber. This vacuum barrier acts as an inert environment that protects the liquid from oxidation and contamination by air, while allowing the bottle exterior to be transparent. The vacuum serves as the protective barrier rather than requiring opaque material.
3Reliability
If a tight plunger is used to control air bladder deployment, then air control is improved, but too much force is required to move it
Solution Approach 1:
The patent segments the air delivery system into a separate air chamber with its own valve mechanism, independent of the liquid chamber. This allows the air to be delivered through a dedicated pathway controlled by a valve that opens only when needed, rather than requiring a tight plunger to control a shared space. The segmentation reduces the force required while maintaining control.
Solution Approach 2:
The patent extracts the air delivery function from the liquid chamber and places it in a separate air chamber with its own valve mechanism. This extraction allows the air to be supplied independently without requiring the plunger to tightly seal against the liquid chamber, reducing the squeezing force needed while maintaining reliable air control for dispensing.
4Force
If a loose or flexible plunger is used to ease movement, then force required is reduced, but liquid bubbles through to the other side during operation
Solution Approach 1:
The patent segments the bottle into distinct liquid and air chambers separated by a vacuum chamber. This segmentation allows the use of a more flexible, easier-to-move plunger in the liquid chamber without risking liquid leakage into the air chamber, since the vacuum chamber acts as a barrier. The segmentation provides both ease of operation and reliable containment.
Solution Approach 2:
The vacuum chamber creates an inert environment that prevents liquid from bubbling or leaking into the air chamber during operation. The vacuum barrier maintains separation between the liquid and air spaces, allowing the plunger to be more flexible and easier to move while preventing liquid contamination of the air delivery system.
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 design reduces contamination, extends shelf life, prevents nozzle clogging, and allows for easy use without shaking, while being cost-effective and aesthetically pleasing, with all liquid being dispensed from the top of a clear container.
Implementation Method 1
a top cap (3) having a nozzle (4), wherein there is a one-way valve (6) for the egress of liquid
Implementation Method 2
a bottom cap (9) that has a shorter nozzle (10) that is directed inward, wherein there is a one-way valve (11) that allows the ingress of air into the other airbag (2)
Implementation Method 3
The body (8) is flexible, and can be compressed inwardly... When the bottle (8) is squeezed, liquid is forced out through the top one-way valve (6)
Implementation Method 4
When the body (8) is released, it snaps back to its original shape, creating a vacuum inside the bottle
Data Source
AI summary
A squeeze bottle forces substantially all of the liquid to be dispensed toward a top of the bottle. A valving arrangement reduces or eliminates a likelihood of air contacting the liquid to be dispensed. A top cap has a nozzle with a one-way valve allowing liquid to leave a liquid bag. A bottom cap has a one-way valve allowing air to enter an airbag. The liquid bag and the airbag are positioned within a sealed third chamber. The liquid bag and the airbag have a controlled interaction within the sealed third chamber, which results in substantially complete emptying of the liquid bag by squeezing the bottle.