Triangular Vacuum Nozzle with Inclined Sole for Large Waste Suction

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Solution Overview

Problem

Vacuum cleaner nozzles with traditional suction channel designs often have insufficient suction efficiency for large waste particles, especially when the vacuum cleaner has low suction flow rates.

Innovation Solution

A vacuum cleaner nozzle with a triangular sole featuring a main suction channel and a secondary suction channel connected to it, where the underside of the sole has a front part that is inclined, reducing airflow passage section and increasing airflow speed at the front tip, enhancing the suction of large waste via the secondary channel and its evacuation to the main channel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a traditional suction channel design is used, then the structure is simple, but the suction efficiency for large waste particles is insufficient

Engineering Contradiction:

Improvestructural simplicityVSAvoidsuction efficiency for large waste

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The suction channel is divided into a main suction channel and a secondary suction channel. The secondary suction channel is positioned at the front tip to specifically handle large waste particles, while the main suction channel handles general dust evacuation, creating specialized pathways for different particle sizes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The front tip region is given a different geometric property (inclined plane) compared to the rest of the soleplate. This localized geometric modification creates high-velocity airflow specifically at the front tip where the secondary suction channel is located, optimizing that region for large particle suction

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If the vacuum cleaner has low suction flow rates, then energy consumption is reduced, but suction efficiency for large waste becomes insufficient

Engineering Contradiction:

Improveenergy consumptionVSAvoidsuction efficiency for large waste

Core Design Contradiction:

Use of energy by moving objectVSProductivity

Solution Approach 1:

The geometric parameters of the front tip are modified by introducing an inclined plane with a specific angle. This geometric parameter change creates a venturi-like effect that accelerates airflow locally at the front tip, enabling effective large particle suction even when the overall suction flow rate is low

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If the front tip is positioned at the same level as the main suction channel, then the structure is simple, but airflow speed at the front tip is insufficient for large waste suction

Engineering Contradiction:

Improvegeometric complexityVSAvoidairflow speed at front tip

Core Design Contradiction:

Device complexityVSSpeed

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The front tip is elevated to a higher position relative to the main suction channel, creating a vertical dimension difference. This dimensional change, combined with the inclined plane, creates a pressure gradient that accelerates airflow vertically and horizontally toward the secondary suction channel

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

This configuration improves suction efficiency and performance by increasing airflow speed at the front tip, effectively handling larger waste particles and ensuring better evacuation.

Implementation Method 1

the front part of the lower face being substantially flat and being inclined so that, when the sole is placed on a surface to be cleaned, the front tip of the vacuum cleaner nozzle is closer to the surface to be cleaned than the front edge of the main suction channel... reducing the passage section of the air flow at the level of the front tip of the vacuum cleaner nozzle, and therefore of increasing the speeds of air flow at the front tip

Methodology Applied

Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentEP3556273B1Vacuum cleaner nozzle equipped with a main suction channel and a secondary suction channel

Publication Date: 2022.08.10 SEB SA

Figure 1~2
Figure 3~5
Figure 6

AI summary

The vacuum nozzle (2) comprises a sole (3) of substantially triangular shape and having an underside (8), a main suction channel (12) extending transversely to a direction of movement of the vacuum nozzle (2), and a secondary suction channel (13) extending substantially parallel to the direction of movement and fluidly connected to the main suction channel (12). The lower face (8) of the sole (3) has a front part (9) extending from a front edge (12a) of the main suction channel (12) to the vicinity of a front tip (6) of the vacuum nozzle, the front part (9) of the lower face (8) being substantially flat and being inclined such that, when the sole (3) is placed on a surface to be cleaned, the front tip (6) of the vacuum nozzle (2) is closer to the surface to be cleaned than the front edge (12a) of the main suction channel (12).