Offset Nozzle Gutter Cleaning Device Backpressure Control
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Solution Overview
Problem
Wand-type gutter cleaning devices face challenges with backpressure issues, especially on taller structures, making it difficult to maintain control during use due to the force of water emitted, which is exacerbated by high-pressure systems and traditional guide implementations.
Innovation Solution
A nozzle body with two offset nozzles that are coplanar and simultaneously emit water, counteracting backpressure to allow easier direction of the water jet into the gutter without losing control of the device, detachably coupled to an elongated conduit serving as a handle connected to a pressurized water source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-pressure water systems are used to increase cleaning effectiveness, then debris removal capability is improved, but backpressure forces make the device difficult to control
Solution Approach 1:
The patent applies counterweight principle by positioning a second nozzle at an obtuse angle relative to the first nozzle. The second nozzle emits a water jet that generates backpressure force opposing the backpressure force from the first nozzle, thereby counterbalancing the forces and improving device controllability during high-pressure operation.
2Stress or pressure
If water pressure is increased to clean gutters on taller buildings, then cleaning effectiveness is improved, but the backpressure forces the device away from the gutter
Solution Approach 1:
The patent uses counterweight principle to stabilize device position by introducing a second nozzle that generates opposing backpressure force. This counterforce balances the destabilizing effect of high-pressure water emission, allowing the device to maintain stable contact with the gutter even when operating at high pressures required for tall building cleaning.
3Device complexity
If a single nozzle is used to simplify the device structure, then device complexity is reduced, but control over the water jet is compromised under high pressure
Solution Approach 1:
The patent introduces a second nozzle configured at an obtuse angle to generate counteracting backpressure force. This additional nozzle, while increasing structural complexity, provides necessary force balance that enables precise water jet direction control during high-pressure operation, particularly when cleaning gutters on tall structures.
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 offset nozzle configuration reduces backpressure forces, allowing for enhanced control and flexibility during gutter cleaning, especially on high rooflines, by providing opposing forces that keep the device in position, reducing operator effort and enabling effective debris removal without the need for additional guides or appendages.
Implementation Method 1
The nozzles are preferably coplanar; however, the nozzles are arranged such that their directions of flow are obtusely offset. The backpressure from a one of the offset nozzles counteracts that of the other nozzle so that a person can more easily direct the water jet into the gutter without losing control of the device.
Data Source
AI summary
A gutter cleaning device comprising a nozzle body preferably detachably coupled to a wand in fluid communication with a pressurized water source, the nozzle body having a fluid passage means providing fluid communication to a first nozzle obtusely offset from a coplanar, simultaneously operating, second nozzle wherein the first nozzle and the second nozzle are offset about 158 degrees.