Oven Lamp Cooling Duct with Inclined Baffle Plate

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Solution Overview

Problem

Existing domestic appliances with cooling air fans and lamps for illumination require additional space and components, limiting the cooling effect, especially during high-temperature pyrolysis operations.

Innovation Solution

A domestic appliance design featuring a main and secondary duct system with an inclined baffle plate in the secondary duct to direct cooling air more effectively towards the lamp, reducing component count and ensuring reliable cooling, even at high temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a secondary duct is added to guide cooling air to the lamp, then the cooling effect is improved, but the device complexity and installation space requirements increase

Engineering Contradiction:
Improvelamp cooling effectVSAvoidduct system complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent combines the cooling air duct and the lamp housing into a single integrated structure. The cooling air channel is formed within the housing itself, eliminating the need for separate secondary ducts and reducing component count while maintaining effective lamp cooling.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The housing serves multiple functions: it provides structural support, guides cooling air through integrated channels, and houses the lamp assembly. This multi-functionality reduces the need for additional components like separate secondary ducts.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Temperature

If more components are added to improve cooling, then the cooling effect is enhanced, but the device complexity increases

Engineering Contradiction:
Improvecooling effectVSAvoidcomponent count
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling air channel is integrated directly into the housing structure rather than being a separate component. This merging of functions reduces component count while maintaining effective cooling of the lamp during high-temperature operations.

Inventive Principle:
Principle #5Merging (Combining)

3Temperature

If the duct configuration is made more complex to improve cooling distribution, then the cooling effectiveness increases, but the installation space requirements increase

Engineering Contradiction:
Improvecooling air distributionVSAvoidinstallation space
Core Design Contradiction:
TemperatureVSArea of stationary object

Solution Approach 1:

The cooling air channels are formed within the housing structure itself, utilizing the existing spatial configuration. This integration achieves effective cooling air distribution to the lamp without requiring additional installation space for separate ductwork.

Inventive Principle:
Principle #5Merging (Combining)

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 configuration enhances cooling efficiency, reduces component complexity, and allows for a more compact and stable design while providing comprehensive illumination and effective heat removal.

Implementation Method 1

a fan which is arranged outside the cooking chamber and is designed to generate a flow of cooling air

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 2

a lamp which is arranged to illuminate the cooking chamber

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Data Source

PatentEP2333425B1Household appliance for preparing food with a fan and a lamp for lighting the cooking chamber
Publication Date: 2016.05.25 BSH HAUSGERATE GMBH
  • EP2333425B1 patent drawingFigure 1~2

AI summary

The invention relates to a domestic appliance for preparing food, which has a cooking chamber (2) delimited by a muffle (3) and a fan (10) which is arranged outside the cooking chamber (2) and is designed to generate a flow of cooling air , and a lamp (15), which is arranged to illuminate the cooking chamber (2), and a main duct (11) for the cooling air supply and a secondary duct (13) for the cooling air supply to the lamp (15) are formed, wherein in a boundary wall (17 , 19) of the secondary channel (13) an inclined deflector plate (20) is arranged.