Oven Ventilation Shield Layout for Cooler Control Components
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Solution Overview
Problem
Conventional pyrolytic ovens face issues with excessive heating of electrical components due to inadequate air circulation, leading to premature aging and increased energy consumption, while also posing health risks from hot components exposed outside.
Innovation Solution
A heat protective shield with a mounting plate and partition plate is positioned above the ventilation unit to create separate temperature zones, shielding electrical components and improving ventilation efficiency, while a ducted ventilation system ensures safe expulsion of hot air and food residues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the air circulation mechanism is shut off to reduce energy consumption, then energy efficiency is improved, but electrical components are excessively heated and rapidly aged
Solution Approach 1:
The internal space is segmented into a first region for electrical components and a second region for the fan, separated by a partition plate. This allows differential thermal management where the electrical components can be protected from excessive heat while the fan region maintains active cooling, enabling the system to reduce overall air circulation while protecting critical components.
Solution Approach 2:
A heat protective shield with mounting plate is introduced as an intermediary barrier between the fan-generated heat and the electrical components. The shield includes a throughlet for cable installation and physically blocks radiant heat from reaching the electrical components, allowing reduced air circulation while maintaining component protection.
2Temperature
If the air circulation mechanism operates continually to cool electrical components, then component temperature is reduced, but overall energy consumption increases
Solution Approach 1:
By segmenting the internal space with a partition plate and heat protective shield, the system creates distinct thermal zones. This allows the air circulation mechanism to operate at reduced capacity while still maintaining acceptable temperatures for electrical components, as the passive shielding structures provide ongoing protection without requiring continuous full-power cooling.
Solution Approach 2:
The system enables periodic or reduced-duty air circulation operation since the heat protective shield provides continuous passive protection. The fan can operate intermittently or at lower speeds knowing that the shield will protect electrical components during periods when the fan is off or running at reduced capacity.
3Temperature
If hot components are exposed outside for ventilation to reduce internal heat, then heat dissipation is improved, but user safety is compromised due to burn risks
Solution Approach 1:
The heat protective shield acts as an intermediary barrier that allows heat to be managed internally without exposing hot components to the user interface area. The shield blocks radiant heat from reaching the control panel and user interface, enabling effective heat dissipation while maintaining user safety.
4Reliability
If a heat protective shield is added to protect electrical components, then component protection is improved, but device complexity increases
Solution Approach 1:
The heat protective shield is merged with the mounting plate structure, combining multiple functions into a single integrated component. The mounting plate serves both as a structural support for the electrical components and as a heat protective barrier, reducing the need for separate protective structures and minimizing overall 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
The solution effectively protects electrical components from overheating, reduces energy consumption, and prevents skin burns by maintaining a cooler environment for critical components and ensuring safe ventilation, even when the fan is off.
Implementation Method 1
The heat protective shield has a size and shape which is configured to screen the user interface and electrical components from radiant heat emanated from the hot air inside the ventilation unit and the chamber during operation
Implementation Method 2
a ventilation unit for expelling radiant heat to an outside
Data Source
Figure 1
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AI summary
The present invention relates to an oven (1) comprising an inner case (2) defining a cooking/baking chamber (3), a heater unit, a door, an outer case (4) enclosing the inner case (2), a user-interface (5) and electrical components (6), a control panel (7) above the door, including the user-interface (5) and a ventilation unit (8) between the outer case (4) and an upper side of the inner case (2). The oven (1) of the present invention comprises a heat protective shield (9) arranged through an air-gap (10) above the ventilation unit (8).