Resilient Mounting Post for Dishwasher Pump Vibration Isolation
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Solution Overview
Problem
Dishwasher appliances generate significant noise due to operations of the fluid circulation system, which is amplified by the tub's shape, necessitating improved mounting solutions to reduce noise levels.
Innovation Solution
A resilient mounting system is implemented, where a fluid circulation assembly is mounted in a sump using a resilient mounting post received in a support tube, with a releasable clip locking the post into place, providing vibration isolation and reducing noise transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fluid circulation assembly is rigidly mounted in the sump, then structural stability and ease of mounting are improved, but noise generated during operation is amplified
Solution Approach 1:
A resilient mounting post is introduced as an intermediary element between the fluid circulation assembly and the sump. This mounting post absorbs and dampens vibrations generated during pump operation and spray arm rotation, preventing noise amplification by the sump structure while maintaining secure mounting of the assembly
2Object-generated harmful factors
If a resilient mounting system is used to isolate vibrations, then noise is reduced, but device complexity increases
Solution Approach 1:
The mounting post's material properties are optimized to provide sufficient vibration damping while maintaining a simple structural form. The resilient material characteristics are selected to achieve noise reduction without requiring complex multi-component mounting assemblies
3Ease of operation
If the mounting system allows easy assembly and disassembly, then ease of operation is improved, but reliability of the connection may deteriorate
Solution Approach 1:
The mounting system is divided into separable components: the resilient mounting post and the support tube with retaining clip. This segmentation allows the assembly to be easily installed and removed by simple insertion and clipping actions, while the resilient material ensures reliable vibration isolation during operation
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 vibrationally isolated fluid circulation assembly significantly reduces noise during dishwasher operation by absorbing and damping vibrations, enhancing the overall quietness of the appliance.
Implementation Method 1
The fluid circulation assembly is vibrationally isolated from the sump by the resilient mounting post
Implementation Method 2
a resilient mounting post received in a support tube of the fluid circulation assembly
Data Source
AI summary
A dishwasher appliance includes a tub that defines a wash chamber for receipt of articles for washing. A sump is positioned at a bottom of the wash chamber for receiving fluid from the wash chamber. A fluid circulation assembly is at least partially disposed within the sump. The fluid circulation assembly is mounted in the sump with a resilient mounting post received in a support tube of the fluid circulation assembly, whereby the fluid circulation assembly is vibrationally isolated from the sump. The fluid circulation assembly includes a releasable clip configured to lock the resilient mounting post into the support tube.