Blower-Attached Liquid Dispenser Using Venturi Suction
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Solution Overview
Problem
Current devices for dispensing liquids with forced-air devices are often dedicated and cumbersome, requiring multiple devices for tasks like leaf blowing and liquid application, with fixed reservoirs leading to spillage and inefficient liquid switching.
Innovation Solution
A universal liquid dispenser attachment for standard lawn blowers that uses interchangeable, closed-system reservoirs and Venturi/Bernoulli principles to deliver variable flow rates and droplet sizes, allowing a single blower to serve both blowing and dispensing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated liquid dispensing devices are used, then liquid application function is achieved, but device complexity and number of devices increases
Solution Approach 1:
The blower device is designed to perform multiple functions: both leaf blowing and liquid application. The housing can accommodate different reservoir types (permanent or removable) and the system can switch between blowing mode and dispensing mode, eliminating the need for separate dedicated devices for each function.
Solution Approach 2:
The liquid dispensing system is merged with the blower device by integrating the reservoir, pump, and dispensing mechanism into the blower housing. This combination allows the single device to handle both air moving and liquid application tasks.
2Device complexity
If fixed reservoirs are used, then device structure is simplified, but ease of operation deteriorates due to spillage and difficult liquid switching
Solution Approach 1:
The reservoir system transitions from fixed to dynamic/removable. The reservoir can be easily detached and replaced, allowing users to switch between different liquids without spillage. The pump system dynamically adjusts to work with different reservoir configurations.
Solution Approach 2:
The liquid storage system is segmented into removable reservoir units that can be independently handled. This segmentation allows users to replace only the reservoir containing the liquid needed, rather than handling the entire device, thereby improving ease of operation and reducing spillage risk.
3Adaptability or versatility
If multiple dedicated devices are possessed, then task versatility is improved, but weight and portability worsen
Solution Approach 1:
The blower device is designed to perform multiple functions: both leaf blowing and liquid application. The housing can accommodate different reservoir types (permanent or removable) and the system can switch between blowing mode and dispensing mode, eliminating the need for separate dedicated devices for each function.
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
Enables efficient dual-purpose use of blowers for leaf blowing and liquid application, reducing spillage and the need for multiple devices, with easy liquid switching and storage of multiple products.
Implementation Method 1
As the blower delivers a high velocity discharge airstream through the adapter housing, a pressure differential is generated
Implementation Method 2
The suction hose has a first open end communicating with an inside of the adapter housing upstream of the nozzle, and a second open end communicating with an inside of the reservoir. The high velocity discharge airstream generates a pressure differential that draws the product from the reservoir through the suction hose
Data Source
AI summary
A product applicator is secured to the blower tube of a portable air blower and incorporates an adapter nozzle assembly and product storage container. The adapter nozzle assembly is located at a distal end of the blower tube, and includes a substantially hollow tubular housing and a discharge nozzle located inside the housing. The housing has a discharge end and a connecting end adapted for being arranged inline with the discharge airstream supplied by the blower. The product storage container is located proximate the housing, and is designed for storing a product to be discharged through the nozzle. A flow regulator is adapted for selectively adjusting a supply of product from the container to the discharge nozzle.