Dishwasher Pump Vibration Isolation Using Elastic Insulating Units
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Solution Overview
Problem
Existing dishwashers experience noise issues due to vibration from the pump being transferred to the cabinet or tub, which is not effectively addressed by current acoustic insulation methods.
Innovation Solution
The dishwasher incorporates at least two insulating units made of elastic material to space the pump apart from the cabinet and sump, using first and second insulating units along the cabinet's height to support the pump and attenuate vibration transfer, with additional units guiding water flow to further reduce vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pump is directly connected to the sump and cabinet, then the structural complexity is reduced, but vibration is transferred to the cabinet causing noise
Solution Approach 1:
The patent introduces insulating units as intermediary components between the pump and the sump/cabinet. These insulating units act as mediators that connect the pump while preventing vibration transfer, thus reducing noise without significantly increasing structural complexity
Solution Approach 2:
The patent segments the connection structure by introducing separate insulating units (first insulating unit and second insulating unit) between the pump and the sump/cabinet. This segmentation allows the connection function to be separated from the vibration transfer function, enabling noise reduction while maintaining structural integrity
2Object-affected harmful factors
If insulating units are added to space the pump from the cabinet, then vibration transfer is reduced, but the device complexity increases
Solution Approach 1:
The insulating units serve as intermediary components that provide both spacing and vibration attenuation functions. By using these mediators, the patent achieves vibration reduction while keeping the added complexity manageable through functional integration
Solution Approach 2:
The insulating units are designed to perform multiple functions simultaneously: they provide spacing between the pump and cabinet, attenuate vibration transfer, and support the pump structure. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
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
This solution effectively prevents vibration and noise transfer from the pump to the cabinet and sump, minimizing noise and reducing the dishwasher's overall volume by positioning the pump at a lower space.
Implementation Method 1
at least two insulating units for connecting the pump with the sump to allow the pump to be spaced apart from a bottom of the cabinet at a predetermined distance and attenuating transfer of vibration generated in the pump to the sump
Data Source
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AI summary
A dishwasher (100) comprises a cabinet (1), a tub (11) for providing a washing space, a sump (13) for providing a space in which the washing water is stored, located below the tub, racks (191, 193) provided inside the tub (11), providing a space in which washing targets are received, spray arms (3, 5) for spraying the washing water to the racks, a pump (8) for supplying the washing water stored in the sump to the spray arms, and at least two insulating units (91, 93, 95) for connecting the pump with the sump to allow the pump to be spaced apart from a bottom of the cabinet at a predetermined distance and attenuating transfer of vibration generated in the pump to the sump.