Movable rack assembly with corner spray nozzles
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Solution Overview
Problem
Conventional decontamination units (washers) face inadequate fluid coverage and impingement in corners due to the conical spray pattern of rotary spray arms, especially in larger, rectangular washing chambers, leading to reduced washing performance and longer cycle times.
Innovation Solution
A movable rack assembly with a tubular frame acting as a manifold, featuring elongated base, side, and transverse members connected to rotary spray arms and corner nozzles, ensuring fluid distribution and improved impingement in the corners of the washing chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional rotary spray arms with conical spray pattern are used, then the washing chamber can be made larger to accommodate bigger loads, but fluid coverage in corners becomes inadequate
Solution Approach 1:
The spray system is segmented into multiple independent spray sources: conventional rotary spray arms for general coverage and additional corner spray nozzles specifically positioned to target corner areas. This segmentation allows each spray source to focus on its optimal coverage zone, ensuring comprehensive fluid distribution throughout the enlarged washing chamber including previously missed corner regions
Solution Approach 2:
The system applies local quality by providing enhanced spray coverage specifically in corner regions through dedicated corner spray nozzles, while the central and main areas continue to be serviced by the rotary spray arms. This localized enhancement ensures that corners receive adequate fluid impingement without requiring a complete redesign of the entire spray system
2Quantity of substance
If the washing chamber is made more rectangular to increase capacity, then larger loads can be accommodated, but corner coverage becomes even more difficult to achieve
Solution Approach 1:
The system addresses the rectangular chamber geometry by implementing corner spray nozzles that are specifically positioned and oriented to target the corner regions. These nozzles provide localized spray enhancement exactly where the rectangular geometry creates coverage challenges, ensuring that the increased capacity does not compromise corner coverage effectiveness
Solution Approach 2:
The spray system transitions from a primarily two-dimensional rotary spray pattern to a three-dimensional coverage system by adding corner spray nozzles that inject fluid from different spatial positions and angles. This dimensional enhancement allows the system to effectively cover the extended rectangular geometry of the enlarged washing chamber
3Device complexity
If only conventional rotating spray arms are used, then the device complexity remains simple, but washing performance in corners is reduced
Solution Approach 1:
The spray system is divided into two functional segments: the existing rotary spray arms that maintain simple mechanical operation, and added corner spray nozzles that provide targeted coverage. This segmentation improves washing performance in corners while keeping the overall system relatively simple by building upon the existing rotary spray arm infrastructure rather than replacing it with a complex new system
Solution Approach 2:
The system merges the conventional rotary spray arm mechanism with additional corner spray nozzles into a hybrid spray system. This combination allows the simple rotary spray arms to continue providing general coverage while the corner nozzles supplement them for targeted corner coverage, achieving improved washing performance through a relatively straightforward integration rather than a complete system replacement
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 provides enhanced washing efficiency and improved fluid coverage in corners, ensuring effective decontamination of objects placed within the chamber, reducing cycle times and improving overall performance.
Implementation Method 1
A plurality of corner spray nozzles on the frame directs fluid toward corners of the frame
Implementation Method 2
a tubular frame acting as a manifold, featuring elongated base, side, and transverse members connected to rotary spray arms and corner nozzles, ensuring fluid distribution
Data Source
AI summary
A movable rack assembly for a washer having a generally rectangular frame. The frame includes a central hub connectable to a fluid source. A plurality of elongated tubular base members extends from the central hub and defines a bottom of the frame. A pair of spaced-apart elongated, tubular side members defines side portions of the frame and a space therebetween. Each of a plurality of spaced-apart transverse members has ends that are connected to one of the side members. The transverse members transverse the space defined between the side members. A rotary spray arm is attached to each of the transverse members. A plurality of corner spray nozzles on the frame directs fluid toward corners of the frame. The bottom members, the side members and the transverse members are fluidly connected with each other and fluidly connect the rotary spray arms and the corner spray nozzles with the central hub.