Microwave Hood Structure With Sliding and Tilting Suction Sections

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Solution Overview

Problem

Microwave ovens with hoods struggle to efficiently capture air contaminants due to a fixed hood design, which limits the suction area and distance from cooking equipment, resulting in incomplete removal of contaminants.

Innovation Solution

A microwave oven design featuring a hood casing with a sliding first hood and a tiltable second hood, allowing for enhanced air suction through auxiliary suction passages and holes, improving the capture of contaminants by adjusting the hoods' positions and angles relative to the suction system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the hood is fixed to the bottom surface of the microwave oven, then the structure is simple and stable, but the suction area is limited and contaminants cannot be efficiently captured

Engineering Contradiction:
Improvesuction areaVSAvoidhood structure
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the hood movable rather than fixed. The first hood can slide forward and backward relative to the hood casing, and the second hood can tilt relative to the first hood. This dynamic structure allows the suction area to be adjusted and expanded, enabling the hood to cover a larger area and capture more contaminants while maintaining a relatively simple overall structure through the use of sliding and tilting mechanisms.

Inventive Principle:
Principle #15Dynamics

2Productivity

If the hood has a flat bottom surface, then the manufacturing is simple, but the rear end of the hood is far from the cooking equipment, reducing suction efficiency

Engineering Contradiction:
Improvesuction efficiencyVSAvoidhood shape
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent uses the dynamics principle to allow the second hood to tilt relative to the first hood. This tilting capability enables the rear end of the hood structure to be dynamically adjusted to be closer to the cooking equipment, thereby improving suction efficiency without requiring a complex fixed angled structure. The tilting mechanism provides the necessary adaptability while keeping the manufacturing process relatively simple.

Inventive Principle:
Principle #15Dynamics

3Productivity

If the hood is fixed in position, then the device is stable and easy to operate, but the distance from the cooking equipment cannot be optimized, limiting contaminant capture

Engineering Contradiction:
Improvecontaminant captureVSAvoidhood operation
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent applies dynamics by enabling the first hood to slide and the second hood to tilt, allowing the hood structure to dynamically adjust its position and orientation to optimize the distance from the cooking equipment. This improves contaminant capture capability. The operation remains relatively simple through the use of sliding and tilting mechanisms that can be easily actuated, balancing ease of operation with improved productivity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent divides the hood into multiple segments: the first hood and the second hood, which can move independently. This segmentation allows each part to be optimized for different functions - the first hood for sliding adjustment and the second hood for tilting adjustment - thereby improving overall contaminant capture while maintaining operational simplicity through modular, independent movements.

Inventive Principle:
Principle #1Segmentation

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 design effectively increases the suction area and distance, improving the capture of air contaminants generated during cooking, leading to more efficient air filtration and cleaner kitchen environments.

Implementation Method 1

a hood casing disposed on a lower portion of the main body; a first hood taken out of the hood casing; and a second hood taken out of the hood casing at a position different from that of the first hood

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS9307582B2Microwave oven having hood
Publication Date: 2016.04.05 LG ELECTRONICS INC
  • US9307582B2 patent drawing
  • US9307582B2 patent drawing
  • US9307582B2 patent drawing

AI summary

Provided is a microwave oven having a hood. The microwave oven having the hood includes a main body having a cooking chamber in which foods are cooked and a passage through which air containing contaminants flows, a hood casing disposed on a lower portion of the main body, a first hood taken out of the hood casing, and a second hood taken out of the hood casing at a position different from that of the first hood.