Dishwasher Fixed Nozzle Assembly with Rib Design to Prevent Clogging
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Solution Overview
Problem
Dish washing machines with fixed nozzle assemblies face challenges in minimizing the introduction of foreign substances due to the design of the nozzle structure, leading to inefficiencies in washing water distribution and potential clogging.
Innovation Solution
The dish washing machine incorporates a guide rib and nozzle support rib configuration to prevent foreign substances from entering the nozzle assembly, with a inclined rib top surface and bottom surface to guide washing water and contaminants out, and a specific flow path design to minimize pressure loss and ensure efficient washing water distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed nozzle assembly is used in a dish washing machine, then the structure is simpler and easier to manufacture, but foreign substances can easily enter the nozzle causing clogging and washing inefficiency
Solution Approach 1:
The nozzle assembly is divided into multiple components: nozzle body, guide rib structure, and support rib structure. This segmentation allows the guide ribs to form a protective barrier against foreign substances while maintaining the simplicity of the overall fixed nozzle design, resolving the contradiction between ease of manufacture and clogging resistance
Solution Approach 2:
Guide ribs are introduced as an intermediary element between the external environment and the nozzle inlet. These ribs create a flow path that directs washing water while blocking foreign substances, serving as a mediator that protects the nozzle without complicating the basic fixed nozzle structure
2Loss of energy
If the outlet of the distribution device faces the upper side, then the flow path is shorter and pressure loss is minimized, but when the fixed nozzle is disposed adjacent to the back wall, the flow path must be bent causing increased pressure loss
Solution Approach 1:
The distribution device outlet is designed with localized directional outlets facing different directions. By providing outlets that can face the back wall directly rather than uniformly facing upward, the design optimizes the local flow path configuration for each nozzle position, minimizing bends and pressure loss while adapting to the specific spatial arrangement of fixed nozzles
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 configuration effectively reduces the introduction of foreign substances into the nozzle assembly, enhances washing water distribution, and maintains the efficiency of the washing process by preventing clogging and pressure loss.
Implementation Method 1
a inclined rib top surface and bottom surface to guide washing water and contaminants out
Implementation Method 2
a pump configured to supply washing water in the sump to the jet nozzle, and washes the dish by jetting washing water at a high pressure to the dish
Implementation Method 3
a vane that is movably provided inside the washing tank and reflects washing water jetted from the jet nozzle toward a dish
Data Source
Figure 1
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AI summary
There is provided a dish washing machine (1), including a main body (10); a washing tank (30) provided inside the main body (10); and a fixed nozzle assembly (320) fixed in one side of the washing tank and configured to jet washing water, wherein the fixed nozzle assembly includes, a nozzle body having a jet nozzle configured to jet washing water; and a nozzle front cover combined with a front surface of the nozzle body, and wherein the nozzle front cover and/or the nozzle body include corresponding ribs to cover a combining portion between the nozzle front cover and the nozzle body to minimize a foreign substance from being introduced into the combining portion of the nozzle front cover and the nozzle body. According to such a configuration, it is possible to minimize contaminants from accumulating in the fixed nozzle assembly.