Food Processor Ventilation Layout for Heat Isolation and Easy Cleaning
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Solution Overview
Problem
Existing milk frothing appliances face challenges in heat management, leading to inefficient heating and cooling, as well as difficulties in cleaning due to encrustation and the presence of fixed stirring mechanisms that are prone to soiling and require extensive cleaning.
Innovation Solution
A machine with a container and impeller for frothing and heating milk, featuring a heat evacuation system with motorized ventilation and a thermal conditioner that minimizes undesired heat transfer, using magnetic coupling for the impeller drive and adjustable thermal profiles for efficient temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heating is applied to froth milk, then the milk reaches desired temperature, but encrustation and burnt protein deposits increase on surfaces
Solution Approach 1:
The invention extracts the harmful heat generation from the milk processing area by providing a separate heating element that heats the container rather than the milk directly. This separates the heating function from the milk contact zone, preventing encrustation and burnt protein deposits while still achieving the desired milk temperature through thermal conduction from the heated container walls.
Solution Approach 2:
The container acts as an intermediary between the heat source and the milk. Instead of direct heating of milk which causes encrustation, the container wall serves as a thermal mediator that distributes heat more evenly and prevents localized overheating and protein burning on the heating surfaces.
2Ease of operation
If a fixed stirring mechanism is installed in the tank, then mixing and frothing functions are achieved, but cleaning becomes troublesome and the mechanism becomes soiled quickly
Solution Approach 1:
The invention removes the fixed stirring mechanism from the tank interior and relocates it to the exterior or integrates it with the removable container. This extraction eliminates the problem of fixed mechanisms becoming soiled and difficult to clean, while the mixing function is maintained through the impeller design that can be easily detached for cleaning or is integrated with the removable container portion.
Solution Approach 2:
The mixing mechanism is segmented into a removable impeller assembly that can be separated from the main tank body. This segmentation allows the impeller to be easily removed and cleaned independently, preventing the accumulation of encrustation and making maintenance simple while retaining the effective mixing function during operation.
3Extent of automation
If electrical components are placed in the powered cavity, then driving and control functions are achieved, but heat generated by these components adversely affects the food cavity
Solution Approach 1:
The invention extracts the electrical components (motor and control elements) into a separate powered cavity isolated from the food cavity. This separation prevents the heat generated by these components from adversely affecting the food, while the mechanical drive function is transmitted through magnetic coupling or a sealed transmission mechanism that maintains thermal isolation between the powered and food zones.
Solution Approach 2:
A magnetic coupling mechanism serves as an intermediary between the powered cavity and food cavity. The motor in the powered cavity generates a magnetic field that drives the impeller in the food cavity without direct mechanical connection, thereby preventing heat transfer from the electrical components to the food while maintaining effective driving function.
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 machine effectively manages heat, reducing encrustation and facilitating easy cleaning by predominantly evacuating heat generated by electrical components, ensuring reliable temperature control and improved hygiene.
Implementation Method 1
a heat evacuation system for evacuating heat from the powered cavity to a space outside such machine
Implementation Method 2
using magnetic coupling for the impeller drive
Implementation Method 3
a thermal conditioner that minimizes undesired heat transfer, using magnetic coupling for the impeller drive and adjustable thermal profiles for efficient temperature control
Data Source
Figure 1~2
Figure 3~4
AI summary
A machine (1) for processing a liquid food substance (10) includes: a container (2) delimiting a food cavity (2') for containing said liquid food substance (10); an impeller (20) for driving the food substance (10) in the food cavity (2'); a housing (3) delimiting a powered cavity (3') that is adjacent the container (2). The powered cavity (3') contains: a motor (30) for driving the impeller (20); a heat evacuation system (35, 36, 37, 37', 37'') for evacuating heat from the powered cavity (3') to a space (6) outside such machine (1), comprising a motorized ventilation arrangement (35,36); and a control unit (31). The motorized ventilation arrangement has a first ventilation device (35) driven by the impeller motor (30). Further to the first ventilation device (35) and to the impeller motor (30), the motorized ventilation arrangement comprises a second ventilation device (36) and a further motor (38) that is different to the impeller motor (30), the further motor (38) being controlled by the control unit (31) to drive the second ventilation device (36).