Swimming Pool Vacuum Collection Bag with Truncated Lower Portion
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Solution Overview
Problem
Self-contained swimming pool vacuum systems face inefficiencies due to debris escaping from collection bags, particularly smaller particles, as the design relies on thrust pressure which drops when the upper chamber fills, allowing debris to escape back into the pool.
Innovation Solution
A collection bag with a cone-shaped entry port and a truncated lower portion that increases thrust pressure and creates a low-pressure area for debris settlement, combined with a water-permeable material and a releasable cinch cord for secure attachment to the vacuum head, ensuring debris remains trapped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the collection bag relies on thrust pressure to maintain debris in the bag, then debris collection is achieved, but when the upper chamber fills, thrust pressure drops and smaller particles escape back into the pool
Solution Approach 1:
The collection bag is divided into an upper collection chamber and a lower debris chamber separated by a partition wall with a lower opening. This segmentation allows the upper chamber to collect debris while the lower chamber stores it, preventing escape even when the upper chamber is full, thus resolving the contradiction between containment reliability and collection capacity.
Solution Approach 2:
The invention adds a vertical dimension to debris storage by creating a lower debris chamber beneath the upper collection chamber. This multi-level arrangement increases the effective storage capacity without compromising the thrust pressure mechanism in the upper chamber, allowing continued collection without debris escape.
2Quantity of substance
If the upper portion of the collection chamber becomes filled with debris blocking water flow, then collection capacity increases, but thrust pressure drops allowing debris to escape
Solution Approach 1:
By segmenting the collection bag into upper and lower chambers with a partition wall, the invention allows the upper chamber to fill with debris without blocking the water flow path. The lower opening in the partition wall maintains circulation, preventing thrust pressure drop while increasing overall debris storage quantity.
Solution Approach 2:
The partition wall with its lower opening acts as an intermediary structure that separates the collection and storage functions. It allows water to continue circulating through the lower opening while debris accumulates in both chambers, maintaining thrust pressure even as storage quantity increases.
3Device complexity
If a conventional collection bag design is used, then simple construction is achieved, but debris escape requires complex additional components to prevent
Solution Approach 1:
The partition wall with lower opening provides an elegant segmentation solution that prevents debris escape using the existing thrust pressure mechanism. This structural division maintains simplicity while significantly improving containment reliability, avoiding the need for complex additional components.
Solution Approach 2:
The invention changes the structural parameter of the collection bag by adding a partition wall with a specific lower opening configuration. This parameter change enables the bag to maintain thrust pressure and prevent debris escape without requiring complex mechanical components, systems, or controls.
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 solution enhances debris collection efficiency by maintaining thrust pressure and promoting self-cleaning circulation, preventing debris from escaping and making the bag easier to clean and reattach, while being cost-effective and easy to manufacture.
Implementation Method 1
a motor driven propeller to generate thrust for picking up debris and forcing the debris into the collection bag
Implementation Method 2
The collection bag is made of a water permeable material
Implementation Method 3
A collection bag with a cone-shaped entry port and a truncated lower portion that increases thrust pressure
Implementation Method 4
promoting self-cleaning circulation, preventing debris from escaping
Data Source
AI summary
A debris collection bag made of a water permeable material is adapted for removable attachment to a self-contained swimming pool vacuum head that uses a motor driven propeller to generate thrust for picking up debris and forcing it into the collection bag. The bag includes a main upper portion that encloses a collection chamber, and a truncated lower portion with an open end. A sleeve between the upper and lower portions surrounds the bag and contains a releasable cinch cord for securing the bag over an annular rim on the vacuum head. The truncated lower portion tucks upwardly within the collection chamber to provide a frustoconical intake that increases thrust pressure entering the bag, while providing greater self cleaning circulation at the top of the collection chamber and a low pressure area surrounding the truncated lower portion to allow leaves, dirt and other debris to settle without escaping the collection chamber.