Dishwasher with spray system assembly
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Solution Overview
Problem
Existing dishwasher spray systems lack a removable and stable component that effectively supports and seals the sprayer assembly, leading to inefficiencies in fluid distribution and rotation, which can result in reduced cleaning performance and maintenance challenges.
Innovation Solution
A rotatable sprayer assembly with a hub and spacers that are threadably coupled to the sprayer mount, providing stability and sealing while allowing for easy removal and rotation, enhancing fluid flow and distribution within the dishwasher.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the sprayer assembly is made removable for easy maintenance, then ease of repair is improved, but stability and sealing effectiveness deteriorate
Solution Approach 1:
The sprayer assembly is divided into separate components (sprayer head, hub, spacers, mount) that can be independently removed and reinstalled. The threaded connection allows the sprayer head to be segmented from the mount while maintaining sealing capability through the hub interface.
Solution Approach 2:
The hub acts as an intermediary component between the sprayer head and the mount, providing both removal capability and sealing function. The spacers serve as intermediaries that maintain proper positioning and spacing, enabling both accessibility for maintenance and stability during operation.
2Reliability
If the sprayer assembly is made stable and sealed, then reliability is improved, but ease of removal for maintenance deteriorates
Solution Approach 1:
The connection system transitions from a fixed, permanent attachment to a dynamic, reversible threaded connection. This allows the assembly to be stable during operation (when threaded on) while enabling easy removal when needed (by unscrewing), providing adaptability between operational reliability and maintenance accessibility.
3Ease of operation
If the sprayer assembly allows easy removal for maintenance, then ease of operation is improved, but fluid distribution stability deteriorates
Solution Approach 1:
The threaded connection and spacer positioning are designed to be pre-configured for easy engagement and disengagement. The hub and mount threads are prepared in advance to guide proper alignment, making removal and reinstallation straightforward while ensuring consistent fluid distribution paths are restored after maintenance.
4Quantity of substance
If the hub interior volume is increased to accommodate fluid flow, then fluid flow is improved, but the structural stability and sealing deteriorate
Solution Approach 1:
The hub is designed with non-uniform wall thickness, providing greater material (and thus sealing capability) at critical sealing locations while maintaining larger interior volume in fluid flow paths. This local differentiation allows the hub to simultaneously accommodate enhanced fluid flow and maintain structural stability and sealing effectiveness where needed.
Data Source
AI summary
A spray system assembly for a household appliance, such as a dishwasher, wherein the spray system assembly can include a diverter housing with a diverter valve, a sprayer mount, and a rotatable sprayer. The rotatable sprayer can include a hub, a spray head, and a pair of spaced spacers. The sprayer mount can include a collar for receiving the hub of the rotatable sprayer. The pair of spaced spacers can circumscribe the hub.