Cyclone Dust Chamber Layout for Higher Capacity and Lower Back Pressure

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Solution Overview

Problem

Current surface cleaning apparatuses, such as vacuum cleaners, have limited dirt collection capacity and require frequent emptying, which can lead to increased user effort and reduced efficiency due to the design constraints of cyclone and dirt collection chamber configurations.

Innovation Solution

The design incorporates a cyclone with a dirt collection chamber that has an openable bottom wall and a moveable plate at the interface with the cyclone, allowing for increased dirt collection capacity and easier emptying by positioning the dirt collection chamber under the cyclone and using a biasing member to maintain the plate's position, along with an airflow conduit extending through the dirt collection chamber to reduce back pressure and enhance airflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the height of the dirt collection chamber is increased to increase dirt collection capacity, then the dirt collection capacity is improved, but the device complexity increases due to the need for openable walls and movable plates

Engineering Contradiction:
Improvedirt collection capacityVSAvoiddevice complexity
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The dirt collection chamber is segmented into an upper section and a lower section separated by a movable plate. This allows the chamber to be divided into functional zones while maintaining overall structural simplicity. The segmentation enables independent access to each section for emptying purposes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A movable plate is introduced at the interface between the upper and lower sections of the dirt collection chamber. This dynamic element can shift position to facilitate emptying of collected material while maintaining the structural integrity and simplicity of the overall chamber design.

Inventive Principle:
Principle #15Dynamics

2Quantity of substance

If the dirt collection chamber is positioned under the cyclone chamber to increase capacity, then the dirt collection capacity is improved, but the airflow back pressure increases

Engineering Contradiction:
Improvedirt collection capacityVSAvoidback pressure
Core Design Contradiction:
Quantity of substanceVSStress or pressure

Solution Approach 1:

The dirt collection chamber is divided into upper and lower sections with a movable plate separator. This segmentation creates optimized airflow pathways that reduce resistance while maintaining the chamber's position under the cyclone for maximum capacity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The airflow path is routed through the movable plate structure, utilizing the vertical dimension and lateral passages around the plate to create efficient flow paths that minimize back pressure despite the chamber's position under the cyclone.

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

3Ease of operation

If the plate is moveably mounted to the openable wall to allow cyclone chamber access, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The movable plate is integrated with the openable wall structure of the dirt collection chamber, combining the functions of chamber access and plate movement into a single operational mechanism. This reduces the number of separate components and simplifies the overall device.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The movable plate serves multiple functions: it acts as a separator between upper and lower chamber sections, provides access to the cyclone chamber when moved, and maintains structural integrity of the dirt collection system. This multi-functionality reduces the need for additional components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 increases the dirt collection capacity, reduces the frequency of emptying, and improves user convenience by allowing unimpeded material discharge and maintaining reduced back pressure on the suction motor, enhancing overall cleaning efficiency and user experience.

Implementation Method 1

The air is drawn into the vacuum cleaner through a dirty air inlet and conveyed to a cyclone inlet. The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 2

The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

a biasing member biasing the plate towards the hinge side of the openable wall

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS8640304B2Cyclone construction for a surface cleaning apparatus
Publication Date: 2014.02.04 OMACHRON INTELLECTUAL PROPERTY INC
  • US8640304B2 patent drawing
  • US8640304B2 patent drawing
  • US8640304B2 patent drawing

AI summary

The surface cleaning apparatus includes a cyclone positioned in am air flow passage. The cyclone has a cyclone air inlet and a cyclone air outlet, a dirt outlet spaced from the cyclone air inlet, a cyclone chamber wall and a longitudinal axis. The surface cleaning apparatus also includes a dirt collection chamber in communication with the dirt outlet. The dirt collection chamber has an openable wall mounted to the surface cleaning apparatus by a hinge and a centrally positioned longitudinal axis, the openable wall has a center and a hinge side. The surface cleaning apparatus also includes a plate positioned at an interface of the dirt collection chamber and the cyclone. The plate is moveably mounted to the openable wall. The surface cleaning apparatus also includes a biasing member biasing the plate towards the hinge side of the openable wall a suction motor positioned in the air flow passage.