Dishwashing machine
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Solution Overview
Problem
Current rack-type tunnel dishwashing machines face challenges in effectively filtering out foodstuff particulates and other solid contaminants, and they often experience prolonged stagnation of washing or rinsing water in the catchment sink after emptying.
Innovation Solution
The dishwashing machine incorporates a catchment sink assembly with a tubular member that divides the drain sump into two volumes, facilitating the direct communication between the catchment tank and the water drain line, and includes auxiliary water passages and a cup-shaped filtering body to prevent contaminants from entering the suction area of the pump, ensuring efficient drainage and circulation of liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-volume drain sump design is used, then the structure is simple, but filtering capabilities are insufficient and water stagnation occurs
Solution Approach 1:
The drain sump is divided into two separate volumes: a first volume that receives liquid from the catchment tank and a second volume from which the pump sucks liquid. This segmentation allows the first volume to act as a settling chamber for contaminants while the second volume provides clean liquid to the pump, thereby improving filtering capabilities without requiring a complex external filtration system.
Solution Approach 2:
A tubular member is introduced as an intermediary element that communicates with the catchment tank and is fitted into the drain sump. This tubular member creates the separation between the two volumes and facilitates the direct communication between the catchment tank and the water drain line, enabling effective contaminant separation while maintaining structural integration.
2Ease of repair
If the tubular member is fitted in detachable manner, then maintenance is simplified, but the connection reliability may be reduced
Solution Approach 1:
The tubular member is designed with a detachable connection that allows it to be removed from the drain sump for maintenance purposes. This dynamic connection enables easy access to the drain sump interior for cleaning and inspection while maintaining a reliable sealed connection during normal operation through proper fitting mechanisms.
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 enhances filtering capabilities, prevents water stagnation, and simplifies maintenance by allowing complete emptying of the catchment sink assembly without removing the filtering body, ensuring effective removal of contaminants and efficient operation.
Implementation Method 1
a drain sump which extends downwards from the bottom of said catchment tank and directly communicates with the inside of the catchment tank so as to receive by gravity the liquid arriving on the bottom of the catchment tank
Data Source
AI summary
Dishwashing machine including an outer casing with an inner washing cavity adapted to accommodating a dishwasher rack. A catchment sink assembly is located on the bottom of the inner washing cavity to collect and accumulate liquid trickling down from the dishwasher rack momentarily located above the catchment sink assembly. The catchment sink assembly includes a basin-shaped catchment tank. A cup-shaped drain sump extends downwards from the bottom of the catchment tank and directly communicates with the inside of the catchment tank to receive washing or rinsing liquid arriving on the bottom of the catchment tank. A tubular member communicates with the catchment tank and is detachably fitted into a corresponding tubular outlet portion in the drain sump to divide the inner volume of the drain sump into a first inner-volume portion directly connected to a water drain line, and a second inner-volume portion directly connected to the suction of the pump.