Coffee Machine Drip Tray Ventilation to Reduce Condensation and Mold
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Solution Overview
Problem
Existing coffee machines face issues with condensation and mold formation in the drip tray cavity due to temperature differences and high humidity, which can damage internal components and affect the quality of brewed coffee.
Innovation Solution
A coffee machine with an air guide channel that connects the drip tray cavity to the ventilation system to remove moisture and improve temperature distribution, reducing the likelihood of condensation and mold formation, while also enhancing the distribution of coffee aroma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the drip tray cavity is kept closed to contain coffee aroma, then aroma retention is improved, but condensation and mold formation increase due to moisture accumulation
Solution Approach 1:
The drip tray assembly is segmented into a removable drip tray and a stationary drip tray cavity. The cavity includes dedicated ventilation channels that remain open for moisture removal, while the removable tray can be taken out for cleaning, separating the aroma containment function from the moisture ventilation function.
Solution Approach 2:
Ventilation channels act as intermediaries between the drip tray cavity and the external environment. These channels allow moisture and hot air to escape while the removable drip tray maintains aroma containment during brewing, mediating between the conflicting requirements of aroma retention and moisture removal.
2Object-affected harmful factors
If ventilation slots are made in the outer housing for moisture removal, then mold formation is prevented, but dust and water penetration increase
Solution Approach 1:
Ventilation functionality is localized to the drip tray cavity rather than the outer housing. The drip tray cavity includes integrated ventilation channels that provide localized moisture removal where it is most needed, while the outer housing maintains its protective sealing against dust and water.
Solution Approach 2:
The ventilation function is extracted from the outer housing and relocated to the drip tray cavity. This separation allows the outer housing to focus on protection while the drip tray cavity handles moisture management through its dedicated ventilation channels.
3Reliability
If the drip tray cavity is sealed to protect internal components, then component protection is improved, but temperature distribution and moisture removal deteriorate
Solution Approach 1:
The system is segmented into a protected outer housing containing internal components and a separate drip tray cavity with ventilation channels. This segmentation allows the outer housing to provide protection while the drip tray cavity manages temperature and moisture through its ventilation system.
Solution Approach 2:
The ventilation channels serve as intermediaries that connect the drip tray cavity to the external environment, enabling heat and moisture to be removed while the outer housing maintains its protective seal for internal components.
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 air guide channel effectively reduces condensation in the drip tray cavity by balancing humidity and improving temperature distribution, protecting internal components and enhancing the user experience with a fresher coffee aroma.
Implementation Method 1
This ventilation can take place by thermal convection, during which outer air is sucked into the interior through ventilation slots which are arranged in the lower region or on the baseplate of the drink preparation machine, flows past the components of the drink preparation machine and absorbs moisture and heat in the process
Implementation Method 2
This ventilation can however be made to take place by means of fans or ventilators
Implementation Method 3
This ventilation can take place by thermal convection, during which outer air is sucked into the interior through ventilation slots which are arranged in the lower region or on the baseplate of the drink preparation machine, flows past the components of the drink preparation machine and absorbs moisture and heat in the process
Implementation Method 4
an air ventilation system in fluid connection with the grinder for providing at least one air stream comprising a coffee grinding aroma to the outside of the coffee brewing apparatus
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A coffee machine (1) having a body (16), a housing (2), a water tank (6), a pump, a brewing device (7) for brewing coffee on basis of delivered ground coffee, a drip tray (9), a drip tray cavity (10) and a ventilation system (8) for providing air stream at least for transporting a coffee grinding aroma outside and the ventilation system (8) is in communication with the drip tray cavity (10) by an air guide channel (11) for the purpose of removing moisture from the drip tray cavity (10) and for improving temperature distribution inside the drip tray cavity (10).