Dishwasher Drying Process with Preheating and Controlled Door Venting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dishwashers face inefficiencies in the drying process due to complex structures and control issues, leading to reduced drying efficiency, increased power consumption, and longer execution times, as well as recontamination risks due to improper door management during drying.
Innovation Solution
A dishwasher design that preheats the washing space by turning on the heater before discharging air inside the space during the drying process, with controlled door opening and closing to maintain optimal temperature and prevent condensation, using a combination of fans and heaters to efficiently manage air flow and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the door is partially opened to discharge humid air during the drying process, then the drying efficiency is improved, but the temperature of the washing space is reduced leading to longer drying time
Solution Approach 1:
The heater is activated before the door is opened to preheat the washing space. This preliminary heating action ensures that when the door is opened to discharge humid air, the temperature drop is minimized, thereby maintaining drying efficiency without extending the drying time.
2Productivity
If the heater and fan are operated at high level to maintain washing space temperature, then the drying efficiency is improved, but the power consumption increases
Solution Approach 1:
The heater and fan are operated in periodic cycles rather than continuously at high level. The system alternates between high-power operation phases and lower-power phases, maintaining the necessary temperature for drying while reducing overall power consumption through this periodic operation pattern.
3Productivity
If additional exhaust duct and blowing fan are added to discharge high-temperature humid air, then the drying efficiency is improved, but the device complexity increases
Solution Approach 1:
The door serves multiple functions: it acts as both the access closure and the exhaust outlet for humid air during drying. By utilizing the door's opening mechanism for dual purposes (access and exhaust), the system achieves effective humid air discharge without adding separate exhaust ducts and blowing fans, thus avoiding increased 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 approach enhances drying efficiency, reduces power consumption, and shortens the drying time while preventing recontamination by maintaining an appropriate temperature and effectively managing air discharge and door operations.
Implementation Method 1
a heater configured to increase a temperature inside the washing space
Implementation Method 2
a blowing fan configured to move air from the washing space to the outside
Implementation Method 3
the washing water on the washing object evaporates to generate humid air
Data Source
AI summary
A dishwasher is disclosed. When the dishwasher performs a drying process, the dishwasher increases a temperature of a washing space before air inside the washing space is discharged, thereby maintaining the temperature of the washing space at an appropriate drying temperature and increasing efficiency of the drying process.