Pool Vacuum Impeller Layout for Compact Watertight Debris Flow

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Solution Overview

Problem

Existing impeller vacuum cleaners face issues with bulky debris accumulation under the impeller and electrical cable safety in water due to non-watertight connections, particularly in small vacuum cleaners.

Innovation Solution

A compact design with a watertight compartment housing the motor and battery within the filter element, suspended above the suction duct, and a central deflector to prevent debris accumulation, ensuring watertightness and efficient debris passage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If the motor and battery are placed outside the suction duct, then the suction duct diameter can be reduced, but the electrical connections are not entirely isolated from water

Engineering Contradiction:
Improvesuction duct diameterVSAvoidwatertightness of electrical connections
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The motor and battery are nested inside the watertight compartment, which is itself positioned within the filter element housing. This nested arrangement allows the electrical components to be protected from water while maintaining a compact overall structure and small suction duct diameter.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The watertight compartment acts as an intermediary barrier between the electrical components (motor and battery) and the water environment. This intermediate structure provides watertight protection while allowing the compact design to be achieved.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the impeller is placed entirely within the suction duct, then the suction efficiency is improved, but the diameter of the suction duct increases

Engineering Contradiction:
Improvesuction efficiencyVSAvoidsuction duct diameter
Core Design Contradiction:
ProductivityVSVolume of stationary object

Solution Approach 1:

The suction duct has different functional zones: the lower portion contains the impeller for efficient suction, while the upper portion houses the watertight compartment with motor and battery. This local differentiation allows the impeller to be effectively contained while maintaining a compact overall diameter.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The motor and battery are positioned in the vertical dimension above the impeller within the filter element housing, rather than extending the suction duct horizontally. This dimensional reorganization maintains suction efficiency while reducing the required duct diameter.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Length of moving object

If the vacuum cleaner is designed for small size, then it is adapted to shallow pools, but the accumulation of bulky debris under the impeller becomes more critical

Engineering Contradiction:
Improvevacuum cleaner lengthVSAvoiddebris accumulation under impeller
Core Design Contradiction:
Length of moving objectVSObject-affected harmful factors

Solution Approach 1:

The watertight compartment containing the motor and battery is extracted from the traditional position within the suction duct and relocated to the filter element housing above the duct. This extraction creates clearance space above the impeller, preventing bulky debris accumulation while maintaining the compact vacuum cleaner size.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

By moving the motor and battery to the vertical dimension above the suction duct in the filter element housing, the patent creates horizontal clearance around the impeller area. This dimensional relocation prevents debris accumulation without increasing the overall length of the vacuum cleaner.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 suction duct diameter, prevents debris accumulation, and ensures electrical components' safety from water, maintaining efficient suction and safety in small vacuum cleaners.

Implementation Method 1

a motor (31) coupled to an impeller (81) located within the suction duct (20), the spinning of which produces the suction

Methodology Applied
Scientific EffectImpeller: Impeller

Implementation Method 2

a battery (32) powering the motor (31), that may be in the form of disposable accumulators

Methodology Applied
Scientific EffectBattery: Battery (electricity)

Implementation Method 3

the spinning of which produces the suction

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS12534929B2Autonomous impeller vacuum cleaner for cleaning swimming pools
Publication Date: 2026.01.27 KOKIDO DEV
  • US12534929B2 patent drawing
  • US12534929B2 patent drawing
  • US12534929B2 patent drawing

AI summary

A submersible vacuum cleaner to clean artificial pools, such as swimming pools. A suction head connected to a suction duct leading into a filter bag. A motor coupled to an impeller located within the suction duct. The spinning of the impeller producing a suction. A battery powering the motor. The motor and the battery being placed in a watertight compartment, itself mostly placed within the filter bag, so as to obtain a compact design of the vacuum cleaner.