Portable Spray Apparatus Damping Stop Deflection Control
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Solution Overview
Problem
The existing portable spray apparatuses suffer from significant deflections of the upper unit relative to the lower unit when placed on the ground, especially when the storage container is full, leading to potential mechanical damage due to impact loads.
Innovation Solution
A damping stop element is arranged between the upper and lower units to limit resilient deflection, with a damping stop element protruding into the movement gap to absorb impact, and anti-vibration elements between the lower unit and the carrier frame to provide additional damping steps, reducing the force applied to the cantilever beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the storage container is filled to increase capacity, then the quantity of substance is improved, but the deflection of the upper unit increases leading to mechanical damage
Solution Approach 1:
A damping stop element is arranged between the upper unit (storage container) and lower unit (fan unit) to provide beforehand cushioning. This damping element absorbs impact energy and limits deflection of the upper cantilever beam when the apparatus is placed on the ground, preventing mechanical damage while allowing full storage capacity
Solution Approach 2:
The damping stop element acts as an intermediary between the upper and lower units. It mediates the impact forces generated when the apparatus is set down, distributing these forces and preventing direct transmission to the cantilever beams, thus protecting the structural integrity while maintaining storage capacity
2Stability of the object's composition
If the movement gap is reduced to limit deflection, then the stability is improved, but the damping capability is reduced
Solution Approach 1:
The damping stop element changes the parameter of the movement gap from a fixed rigid distance to a controlled compliant distance. The element provides a defined compression stroke that limits deflection while maintaining adequate spacing, optimizing both stability and impact protection capability
3Strength
If rigid connection is used to reduce deflection, then the structural rigidity is improved, but the shock absorption is reduced
Solution Approach 1:
The connection between upper and lower units has non-uniform local quality: the damping stop element provides localized compliance at the interface, while the cantilever beams themselves maintain their rigid structural properties. This localized flexibility protects against impact damage without compromising overall structural rigidity
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 solution effectively limits the deflection of the upper cantilever beam, preventing mechanical damage by distributing the impact force through sequential damping steps, ensuring the apparatus remains stable and functional even when fully loaded.
Implementation Method 1
a damping stop arranged on one of the upper unit and the lower unit and configured to delimit the movement gap and dampen an elastic deflection of the upper unit by a contact engaging of the damping stop on the other one of the upper unit and the lower unit
Implementation Method 2
the stop element itself is preferably constructed as a damping element; rubber is particularly suitable as a material for the damping element
Implementation Method 3
The second, lower unit is retained on the carrier frame by anti-vibration elements. The second, lower unit is thus decoupled from the carrier frame so as to be independent of the first, upper unit, the anti-vibration elements being able to be constructed as damping elements
Data Source
AI summary
The invention relates to a portable spray apparatus having a carrier frame, a blower and a storage vessel for a medium to be discharged. An upper unit with the storage vessel and a lower unit with the blower are retained on the carrier frame. The two units are located in the vertical direction of the carrier frame at a spacing (z) from each other. The spacing (z) is selected so that a movement gap is formed between the upper unit and the lower unit. To limit the resilient deflection of the upper unit, there is arranged on one of the units a damping stop which limits the movement gap and damps a resilient deflection of the upper unit by abutment of the damping stop on the other one of the units.