Dishwasher
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dishwashers face challenges in forming microbubbles without a separate electric device, removing dirt from air taps, preventing contaminant accumulation in tub corners, minimizing vibration and noise during microbubble formation, and preventing washing water from pooling during noise reduction.
Innovation Solution
A dishwasher design incorporating an air jet generator with an air crushing pipe, impeller, and air tap that forms microbubbles in washing water, features a detachable nozzle for easy cleaning, and an air chamber to reduce noise and vibration, with a cylindrical nozzle for thorough tub cleaning and discharge holes for corner coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a separate electrolysis unit is used to generate microbubbles, then washing power is increased, but device complexity increases and requires independent operation
Solution Approach 1:
The air jet generator combines the air injection system and microbubble generation function into a single integrated component that works with the existing pump system, eliminating the need for a separate electrolysis unit while maintaining microbubble generation capability
Solution Approach 2:
The air jet generator serves multiple functions: it generates microbubbles for enhanced washing power, cleans the bottom of the tub, and can be easily disassembled for maintenance, making it a multi-functional component that addresses several problems simultaneously
2Reliability
If the air tap is blocked by dirt, then microbubble formation is affected, but easy cleaning is required
Solution Approach 1:
The air jet generator is designed with detachable components including the air tap and air crushing pipe, allowing them to be easily separated and cleaned individually without disassembling the entire device, thus maintaining reliability while enabling easy maintenance
Solution Approach 2:
The design allows users to easily clean the air tap and air crushing pipe by simply detaching them, making the maintenance process self-serviceable without requiring professional intervention or complex disassembly procedures
3Productivity
If washing water is discharged in only one direction, then microbubbles are formed, but contaminant accumulation occurs in corner portions
Solution Approach 1:
The air crushing pipe is designed to form bubbles in washing water flowing upward through it, adding a vertical dimension to the washing action. This upward flow pattern complements the horizontal spray from the injection nozzle, ensuring that corner areas of the tub bottom are also reached and cleaned, preventing contaminant accumulation
4Object-affected harmful factors
If space is formed to reduce noise, then noise is reduced, but washing water pools in the space
Solution Approach 1:
The air chamber is pre-designed with a specific shape and positioning that guides washing water flow around it, preventing water pooling before it becomes a problem. The chamber's geometry is optimized to allow water to flow through or around it without accumulating, eliminating the need for additional drainage features
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 solution ensures constant air bubble formation, easy dirt removal, reduced vibration, noise reduction, and effective cleaning of tub corners, preventing contaminant accumulation and water pooling.
Implementation Method 1
an air crushing pipe (110) including a decompression portion (120) for depressurizing the washing water flowing inside, and a pressing portion (130) for pressurizing the washing water flowing inside downstream of the decompression portion (120)
Implementation Method 2
an air tap (180) for crushing the air existing in the washing water discharged from the air crushing pipe (110)
Implementation Method 3
an impeller for applying a centrifugal force to the washing water flowing to the decompression portion, thereby applying a centrifugal force to the washing water flowing to the air crushing pipe to be advantageous in crushing air introduced into the air inlet hole
Implementation Method 4
an air chamber to reduce noise generating in a process of forming microbubbles
Data Source
AI summary
A dishwasher includes a tub; an injection module; a sump for supplying washing water to the injection module; a washing pump; and an air jet generator configured to form air bubbles in the washing water and to discharge the washing water to the sump. The air jet generator forms a flow path perpendicular to a bottom surface of the tub and includes a decompression portion for depressurizing washing water and a pressing portion for pressing the washing water; an air crushing pipe having an air inlet hole to introduce external air; an air tap for crushing air in the washing water discharged from the air crushing pipe; and an air chamber disposed outside the air crushing pipe and forming a space for introducing air therein, and having an air inlet hole for communicating with the inside of the air crushing pipe at one side of the lower portion.