Aerodynamic Spray Bar Assembly for Floor Cleaning Turbulence Reduction
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Solution Overview
Problem
Existing flat surface cleaning machines lack improvements in durability, operational efficiency, and effectiveness, necessitating advancements in design and functionality.
Innovation Solution
The development of a flat surface cleaning machine with an inverted cup-shaped deck and a swivel coupled to a pressurized liquid source, featuring a rotatable spray bar assembly with an aerodynamically shaped outer surface profile, adjustable nozzle angles, and modular arm configurations for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the spray bar assembly uses a traditional design, then the structure is simple and easy to manufacture, but the rotational performance is poor and turbulence is high
Solution Approach 1:
The spray bar assembly incorporates an aerodynamically shaped outer surface profile with curved contours instead of straight edges. This curvature reduces turbulence during rotation and improves aerodynamic performance, allowing the spray bar to rotate more efficiently at high speeds while minimizing fluid disruption and energy loss.
Solution Approach 2:
The design modifies geometric parameters of the spray bar assembly including the aerodynamic profile shape, diameter variations along the bar length, and nozzle positioning angles. These parameter changes optimize rotational dynamics and fluid flow characteristics, enabling improved rotational performance without significantly increasing structural complexity.
2Productivity
If the spray bar assembly is designed for high rotational performance, then cleaning effectiveness improves, but weight increases
Solution Approach 1:
The spray bar assembly is divided into modular components including the hub member, arm members, and nozzle assemblies that can be independently manufactured and assembled. This segmentation allows for optimized weight distribution and enables the use of lighter materials in non-critical areas while maintaining structural integrity and cleaning performance.
Solution Approach 2:
The spray bar assembly utilizes composite construction combining materials with different properties - such as lightweight alloys for the bar structure and denser materials for nozzle components. This composite approach reduces overall weight while maintaining the structural strength and rotational performance necessary for effective cleaning operation.
3Adaptability or versatility
If the nozzle angle is fixed, then the manufacturing process is simple, but the adaptability to different cleaning requirements is limited
Solution Approach 1:
The nozzle assembly incorporates an adjustable angle mechanism that allows the nozzle to be positioned at different angles relative to the spray bar axis. This dynamic adjustment capability enables adaptation to various cleaning requirements and surface geometries while maintaining a relatively simple manufacturing process through modular nozzle design with standardized mounting interfaces.
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 improved design enhances rotational performance, reduces weight and turbulence, and allows for controlled application of pressurized fluid, resulting in increased efficiency and effectiveness in cleaning large areas.
Implementation Method 1
At least a selected one of the hub member or the arm member has an aerodynamically shaped outer surface profile to enhance rotational performance of the spray bar assembly
Implementation Method 2
The nozzles may be arranged to induce rotational thrust to the bar, thereby causing the bar to rotate at a high rate of speed as the pressurized liquid impinges the underlying floor surface
Data Source
AI summary
Apparatus for cleaning a horizontally extending floor surface. In some embodiments, a flat surface cleaning machine has an inverted cup-shaped deck and a swivel coupled to a source of pressurized liquid such as water. A rotatable spray bar assembly extends from the swivel and includes an elongated hub member, an arm member threadingly coupled to the hub member, and a nozzle threadingly coupled to the arm member. Shoulder limit surfaces set the rotational position of the arm member relative to the hub member to position the nozzle at a desired operational angle such as from 5-30 degrees. Interior channels along the hub and arm members are shaped to efficiently convey the pressurized fluid to the nozzle. Multiple hub and arm members may form a T, X, Y or star-shaped pattern. The spray bar has an aerodynamically shaped outer surface profile to reduce weight, vibration and turbulence during operation.