Pool Cleaner Check Valve and Roller Latch Mechanisms

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Solution Overview

Problem

Existing swimming pool cleaners face issues with clogged filter elements, reduced suction performance, and difficulty in handling debris, as well as getting stuck on obstacles during cleaning, which hampers effective debris removal and pool maintenance.

Innovation Solution

The swimming pool cleaner incorporates a hydrocyclonic particle separator assembly with a canister subassembly and drive assembly featuring six driven brushed rollers, allowing for efficient debris separation and improved navigation over pool surfaces, including convex and concave areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If traditional filter elements (bags, mesh, baskets) are used in the pool cleaner, then debris can be trapped and retained, but the filter elements quickly become clogged or occluded, reducing suction performance and requiring frequent cleaning or replacement

Engineering Contradiction:
Improvedebris retention capacityVSAvoidsuction performance
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The filter assembly is divided into multiple filter elements (first filter element, second filter element, third filter element) arranged in parallel within the debris retention chamber. This segmentation allows debris to be distributed across multiple filtering surfaces, preventing any single element from becoming completely clogged and maintaining suction performance while retaining debris capacity.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If traditional filter elements are used, then debris can be contained, but the filter elements become clogged prior to the debris retention area being completely full, requiring frequent maintenance

Engineering Contradiction:
Improvedebris retention volumeVSAvoidmaintenance frequency
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

Multiple filter elements provide increased total filtering surface area, allowing the debris retention chamber to reach full capacity before filter elements become completely clogged. This extends the operational cycle between maintenance intervals, reducing the frequency of filter cleaning or replacement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The filter elements are designed to be easily removable and replaceable. When filter elements do become clogged, users can quickly discard the depleted filter element and install a fresh one without complex disassembly, minimizing maintenance time and effort.

Inventive Principle:
Principle #34Discarding and recovering

3Ease of repair

If users directly handle filter elements and debris for cleaning or replacement, then filter maintenance can be performed, but debris and water get on users during the process

Engineering Contradiction:
Improvefilter element maintenanceVSAvoiddebris contamination to user
Core Design Contradiction:
Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The filter elements are designed as removable components that can be easily extracted from the debris retention chamber. Users can remove clogged filter elements and replace them with new ones without having to manually clean debris from the filter elements, eliminating direct contact between users and contaminated surfaces.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system allows users to simply replace filter elements rather than clean them. The ease of removal and replacement means users perform a simple swap operation without needing to handle or clean debris-contaminated surfaces, making maintenance self-service and hygienic.

Inventive Principle:
Principle #25Self-service

4Productivity

If the pool cleaner uses traditional navigation methods, then it can move along pool surfaces, but it gets stuck on obstacles such as lights and drains during cleaning

Engineering Contradiction:
Improvecleaning coverageVSAvoidtraversal continuity
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The pool cleaner employs six driven rollers that can independently adjust their rotation and provide active propulsion. This dynamic drive system enables the cleaner to actively navigate over obstacles such as lights and drains rather than passively rolling, maintaining traversal continuity and preventing getting stuck while ensuring complete cleaning coverage.

Inventive Principle:
Principle #15Dynamics

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 separation and filtration efficiency, reduces the need for frequent filter cleaning, and improves the pool cleaner's ability to traverse pool surfaces without getting stuck, ensuring thorough cleaning and extended filter life.

Implementation Method 1

the fluid enters the one or more cyclone containers at the respective tangential inlet, forming a cyclonic flow (e.g., a second cyclonic flow) about a second axis within each cyclone container. The second cyclonic flow includes once-filtered debris laden fluid having small debris that is separated from the fluid through contact with the cyclone container body.

Methodology Applied
Scientific EffectCyclonic flow: Cyclone Separation

Implementation Method 2

small debris that is separated from the fluid through contact with the cyclone container body. The debris separated in the cyclone container body falls through the underflow nozzle of each cyclone container

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

A motor housing includes a pump motor operatively connected to an impeller for same. Fluid being pulled through the canister subassembly and intake enters the canister body at the tangential inlet forming a cyclonic flow

Methodology Applied
Scientific EffectImpeller: Impeller

Implementation Method 4

The filtering medium is positioned within the canister, the one or more cyclone containers are positioned within the filtering medium, and the fine debris container is positioned below the one or more cyclone containers

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS10364905B2Pool cleaner check valve
Publication Date: 2019.07.30 HAYWARD IND INC
  • US10364905B2 patent drawing
  • US10364905B2 patent drawing
  • US10364905B2 patent drawing

AI summary

Exemplary embodiments are directed to pool cleaners that remove debris from water using a plurality of cyclonic flows, or that include a removable impeller subassembly, a check valve for a debris canister, a particle separator assembly having a handle that locks to the pool cleaner, a modular roller drive gear box, or a roller latch that secures a roller to the pool cleaner. Exemplary embodiments are also directed to the check valve and the roller latch themselves. Exemplary embodiments are directed to a filter medium for pool cleaners that includes embossments providing flow channels for water, and to roller assemblies for pool cleaners. Exemplary embodiments are directed to pool cleaners including alternative pump motor engagements. Exemplary embodiments are directed to pool cleaners power supplies that include a potted and contoured power board assembly, and to kickstands therefor. Exemplary embodiments are directed to a pool cleaner caddy, and removable wheels therefor.