Rotatable Collection Bag Cuff for Blower Vacuum Wetness Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Blower vacuum devices face issues with wet and soiled collection bags when used in vacuum mode, as existing solutions allow air to diffuse out, leading to moisture leakage and discomfort for users.
Innovation Solution
A rotatable cuff attachment for the collection bag allows it to be oriented in multiple positions, including slung over the shoulder or under the vacuum tube, with a coupler that securely connects to the blower vacuum device's air outlet, and a diffuser to direct air flow away from the bag's walls, reducing debris impact and kinetic energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the collection bag is fixed in a single position to allow air diffusion, then moisture can escape from the bag, but the user experiences discomfort when the bag rests at the side due to wetness
Solution Approach 1:
The collection bag is made rotatable relative to the air outlet through a rotatable cuff mechanism, allowing the bag to be dynamically repositioned between different orientations (hanging at side, carrying on shoulder, positioning under vacuum tube) depending on the operational mode and user comfort requirements
2Ease of operation
If the collection bag is positioned at the side of the user for easy access, then the user can easily monitor and empty the bag, but the user gets wet from damp leaves when the bag is slung over the shoulder
Solution Approach 1:
The rotatable cuff enables the collection bag to be repositioned from a side-hanging position (easy access) to a shoulder-carrying position (hands-free operation) or under-vacuum-tube position (protected from wetness), allowing the user to dynamically select the optimal position based on operational needs and environmental conditions
3Productivity
If the air flow is directed directly into the collection bag, then the bag fills efficiently, but the debris impacts the bag walls causing abrasion and reducing bag life
Solution Approach 1:
A diffuser element is introduced as an intermediary component between the air outlet and the collection bag. This diffuser disperses the concentrated air flow into a wider, gentler flow pattern, reducing the kinetic energy and abrasive impact of debris particles on the bag walls while still maintaining effective filling of the bag
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 rotatable cuff enhances user convenience by allowing easier maneuverability and reducing wetness, while the diffuser prolongs bag life by minimizing debris abrasion and air flow impact.
Implementation Method 1
a diffuser to direct air flow away from the bag's walls, reducing debris impact and kinetic energy
Data Source
AI summary
An attachment for a blower vacuum device comprising a collection bag; a coupler for removeably coupling the attachment to an air outlet of the blower vacuum device and for directing air from the air outlet into the collection bag; and a rotatable cuff fixed to the collection bag and rotatably mounted to the coupler such that the collection bag is rotatable with respect to the air outlet.