Dishwasher Circulation Pump With Dual Outlets for Liquid Reuse
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Solution Overview
Problem
Current dishwashers face a conflict between achieving high-quality washing and efficient water and energy use, with existing solutions for reusing washing liquid being costly due to the need for complex hydraulic components and control systems.
Innovation Solution
A dishwasher design featuring a washing chamber with a sump, circulation pump, and washing liquid storage tank, where the circulation pump has two outlets to efficiently pump washing liquid from the sump to both the spray arrangements and the storage tank, reducing the need for additional hydraulic components and allowing for simple and cost-effective filling and emptying of the storage tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a washing liquid storage tank is added to store washing liquid for re-use, then water and energy efficiency is improved, but device complexity and manufacturing cost increase due to additional hydraulic components and control functions
Solution Approach 1:
The circulation pump is designed with multi-functionality by providing both a first outlet for spraying washing liquid and a second outlet for filling the storage tank. This allows a single pump to perform multiple functions (washing and storage filling) without requiring separate pumping systems, thereby improving energy efficiency while avoiding additional hydraulic components and control complexity
Solution Approach 2:
The patent merges the washing liquid delivery function and storage tank filling function into a single circulation pump system. By combining these functions in one pump with multiple outlets, the design eliminates the need for separate hydraulic systems and control mechanisms that would otherwise be required, thus reducing device complexity while maintaining water and energy efficiency benefits
2Loss of substance
If a washing liquid storage tank is added to store washing liquid for re-use, then water efficiency is improved, but manufacturing cost increases due to additional hydraulic components
Solution Approach 1:
The circulation pump serves multiple purposes: it delivers washing liquid to spray arrangements for washing and simultaneously fills the storage tank for reuse. This multi-functionality allows the system to achieve water efficiency through liquid reuse while avoiding the need for additional dedicated pumping equipment, thereby reducing manufacturing costs
Solution Approach 2:
The patent extracts the storage tank filling function from a separate hydraulic system and integrates it into the existing circulation pump. By taking out the filling requirement and incorporating it into the pump's existing capabilities through a second outlet, the design achieves water conservation without adding significant manufacturing complexity or cost
3Adaptability or versatility
If additional hydraulic components such as flow controllers and T-junctions are added to fill the storage tank, then storage tank filling capability is improved, but device complexity increases
Solution Approach 1:
The circulation pump is designed with universal functionality by incorporating both a first outlet for washing and a second outlet for storage tank filling. This allows the pump to adapt to different operational requirements (washing only, storage filling, or both simultaneously) without requiring additional flow controllers, T-junctions, or complex hydraulic components
Solution Approach 2:
The patent merges the storage tank filling capability directly into the circulation pump's outlet structure. By combining the filling function with the existing pump infrastructure through a second outlet, the design achieves versatile storage tank filling capability while avoiding the addition of separate hydraulic components that would increase 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 design enables efficient use and reuse of washing liquid while minimizing production costs and complexity, allowing for easy control of filling and emptying processes, thereby reducing water and energy consumption.
Implementation Method 1
the circulation pump is arranged to pump washing liquid from the sump to the one or more spray arrangements via the first outlet, wherein the circulation pump is further arranged to pump washing liquid from the sump to the washing liquid storage tank via the second outlet
Data Source
AI summary
A dishwasher is provided including a washing chamber with a sump and a hydraulic arrangement. The hydraulic arrangement may include the sump, a circulation pump, one or more spray arrangements, and a washing liquid storage tank. The circulation pump may include an inlet and a first outlet, the inlet being connected to the sump and the first outlet being connected to the one or more spray arrangements, wherein the circulation pump may be arranged to pump washing liquid from the sump to the one or more spray arrangements via the first outlet. The circulation pump may include a second outlet connected to the washing liquid storage tank wherein the circulation pump may be further arranged to pump washing liquid from the sump to the washing liquid storage tank via the second outlet.