Horizontal Wash Pump Assembly for Low-Height Dishwashers
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Solution Overview
Problem
Existing dishwasher designs face challenges such as unstable water sealing, reduced water purification capacity, increased overall height, and difficulty in assembling and fixing components due to the vertical assembly of the wash pump and impeller housing, leading to pressure loss and reduced wash space.
Innovation Solution
A dishwasher with a horizontal type wash pump assembly that includes a sump with parallel inlet and outlet ports, a fixing holder for stable motor fixation, and a garbage chamber configuration that allows for increased water flow and purification capacity, reducing the overall height and enhancing assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the wash pump and impeller housing are assembled vertically, then the pump can be compact, but the sealing becomes unstable and water leakage occurs
Solution Approach 1:
The patent inverts the conventional vertical assembly orientation to a horizontal configuration. The impeller housing and pump body are assembled horizontally, which fundamentally changes the sealing interface geometry and stress distribution, thereby achieving both compactness and sealing stability simultaneously.
Solution Approach 2:
The invention transitions from vertical (one-dimensional) stacking to horizontal (lateral) arrangement, effectively utilizing a different spatial dimension for the assembly. This dimensional change allows the sealing surfaces to be positioned optimally for both compact packaging and stable sealing performance.
2Volume of moving object
If the garbage chamber is positioned along the circumference of the impeller housing, then the structure is compact, but the water purification capacity is reduced
Solution Approach 1:
The garbage chamber is repositioned from a circumferential arrangement to a lateral extension along the horizontal axis. This spatial reconfiguration increases the chamber's effective volume and surface area available for water purification while maintaining overall structural compactness through horizontal rather than vertical expansion.
3Device complexity
If the motor and impeller are connected vertically, then the pump structure is simplified, but the overall height of the dishwasher increases
Solution Approach 1:
The vertical connection between motor and impeller is inverted to a horizontal connection. The motor shaft and impeller are aligned horizontally rather than vertically, which maintains the mechanical simplicity of direct coupling while eliminating the height increase that would result from vertical stacking in the dishwasher assembly.
4Adaptability or versatility
If the sump and motor are fixed with separate components, then the assembly is flexible, but the fixation is unstable
Solution Approach 1:
The separate fixation components for the sump and motor are merged into an integrated base structure. This unified base provides stable fixation for both components while maintaining assembly flexibility through standardized mounting interfaces and modular design elements.
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 horizontal wash pump assembly reduces the overall height of the dishwasher, stabilizes water flow, and enhances assembly efficiency, increasing the wash space and purification capacity while preventing water leakage and improving component fixation.
Implementation Method 1
The impeller 42 is accommodated in the impeller housing 60 provided over the sump 20 and is connected to the motor 40 provided under the sump 20 via a rotational shaft 41. If the impeller 42 is rotated by the driven motor 40, the water is introduced into one side of the garbage chamber 70
Implementation Method 2
A filter 94 is provided over the garbage chamber 70. The water introduced into the garbage passage is purified in a following manner by overflowing onto the filter 94 to be purified and is then recovered to the sump 20
Data Source
AI summary
A dishwasher and assembly method thereof are disclosed, by which an overall height of the dishwasher is reduced, by which water can stably flow and by which assembly efficiency can be enhanced. The present invention includes a sump accommodating water therein and a wash pump assembled to the sump in a lateral direction to circulate the water within the sump.