Disposable Vacuum Bagger Housing for Dust-Free Yard Debris Collection

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Solution Overview

Problem

Conventional air permeable collection bags for lawn blower/vacuums and mulchers are cumbersome, allow airborne dust and particles to be inhaled by users, require frequent cleaning due to clogging, and are difficult to empty efficiently, exposing users to debris during the transfer process.

Innovation Solution

A leaf and lawn vacuum bagger apparatus with a housing removably attached to the exhaust outlet of a blower/vacuum or mulcher, using a disposable trash bag that can be easily detached and replaced, and optionally retaining debris in the housing for dust-free disposal, with features like snap-on and slide-in retaining covers to manage debris without a bag.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional air permeable collection bags are used, then vacuumed debris can be captured, but airborne dust particles and small particles can pass through the bag material and be inhaled by the user

Engineering Contradiction:

Improveuser exposure to airborne dustVSAvoidbreathability of bag material

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The collection bag is divided into multiple layers with different functions: an outer layer for structural support and an inner layer for fine particle filtration. This segmentation allows the bag to provide both breathability and protection against airborne dust particles.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A filter material layer is introduced as an intermediary between the vacuumed debris and the user. This intermediate layer captures airborne dust particles and small particles while allowing air to pass through, preventing user exposure to harmful particles.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Use of energy by moving object

If conventional air permeable collection bags are used, then air can flow through the bag, but the pores become clogged by airborne dust particles requiring frequent cleaning

Engineering Contradiction:

Improveair flow through bagVSAvoidtime for cleaning bag

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The collection bag is designed as a disposable component made from non-woven fabric that can be easily replaced when full or clogged. This eliminates the time-consuming cleaning process while maintaining air flow capability throughout the bag's service life.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The bag material transitions from conventional woven fabric to non-woven fabric with specific pore structure. This parameter change allows the material to maintain open pores for air flow while capturing particles on the surface, preventing pore clogging.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If conventional air permeable collection bags are used, then debris can be collected, but emptying the bag requires manual transfer to larger containers which is time consuming and exposes users to dust

Engineering Contradiction:

Improvedebris collection capacityVSAvoidtime for emptying bag

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The collection bag is designed to be easily detached from the vacuum device and disposed of as a complete unit. This extraction of the bag from the system eliminates the need for manual transfer of debris to larger containers, saving time and preventing user exposure to dust during emptying.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The disposable collection bag is designed for single-use and easy disposal. After collecting debris, the entire bag can be quickly removed and discarded, eliminating the time-consuming process of emptying and cleaning reusable bags.

Inventive Principle:

Principle #34Discarding and recovering

4Strength

If conventional collection bags made of heavy material are used, then structural strength is provided, but the bags become bulky and awkward to handle

Engineering Contradiction:

Improvestructural strength of bagVSAvoidweight and bulk of bag

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The collection bag is made from composite non-woven fabric material that combines structural strength with lightweight properties. This composite material provides the necessary durability to contain debris while remaining lightweight and easy to handle, replacing heavy conventional materials.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS7987548B1Leaf and lawn vacuum bagger

Publication Date: 2011.08.02 HAYS JOHN N

AI summary

A leaf and lawn vacuum bagger has a housing that is attached to the exhaust outlet of a conventional leaf and lawn blower/vacuum or mulching device, and a conventional disposable trash bag is releasably attached to the housing for capturing the vacuumed yard debris. When the disposable bag is full or otherwise, it may be easily detached and another disposable bag easily affixed to collect more vacuumed leaf and yard debris. Alternatively, the vacuumed leaf and lawn debris can be collected and retained in the housing for later removal.