Cooking Lid Venting Assembly for Redirecting Heat and Smoke

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Solution Overview

Problem

Cooking appliances often trap and release heat, heated air, and smoke directly towards the user when the lid is opened, posing a safety hazard.

Innovation Solution

A cooking appliance with a lid that includes vents that can be actuated between closed and open positions, using handles or articulating assemblies to redirect heat and smoke away from the user before or during lid opening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the lid is opened directly without venting, then access to the cooking cavity is achieved, but heat and smoke are released directly towards the user causing safety hazards

Engineering Contradiction:
ImproveAccess to cooking cavityVSAvoidHeat and smoke exposure to user
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The vent opens automatically before the lid is fully opened, allowing heat and smoke to be redirected away from the user in advance. This preliminary action prevents the harmful release that would occur if the lid were opened directly without prior venting.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The lid assembly is segmented into independent vent and lid components that can operate separately. The vent can open and redirect emissions before the lid itself is opened, allowing the two functions to be decoupled and performed in an optimal sequence for safety.

Inventive Principle:
Principle #1Segmentation

2Object-affected harmful factors

If vents are added to redirect heat and smoke, then user safety is improved, but device complexity increases due to additional components

Engineering Contradiction:
ImproveHeat and smoke redirectionVSAvoidNumber of venting components
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The venting mechanism is merged with the existing lid assembly, sharing common structural elements and mounting points. This integration allows the venting function to be added without proportionally increasing overall device complexity, as the vent utilizes the lid's existing framework.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The vent structure serves multiple functions: it redirects heat and smoke away from the user, maintains cooking cavity pressure, and can be integrated with the lid's thermal management system. This multi-functionality reduces the need for separate dedicated components for each function.

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

3Object-affected harmful factors

If vents are positioned at the rear of the lid, then heat and smoke are redirected away from the user, but the handle positioning becomes constrained

Engineering Contradiction:
ImproveHeat and smoke directionVSAvoidHandle accessibility
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The vent and handle are positioned asymmetrically on the lid, with the vent located at the rear edge and the handle at the front. This asymmetric arrangement allows both components to occupy optimal positions without interfering with each other's function or accessibility.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The vent operates in a different spatial dimension than the handle, with the vent positioned at the rear edge of the lid while the handle is positioned at the front. This dimensional separation allows both components to function independently without compromising accessibility or heat redirection effectiveness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Effectively redirects heat and smoke away from the user, enhancing safety and comfort during operation by managing airflow and emissions.

Implementation Method 1

the appliance may trap/build up and subsequently release heat, heated air, and/or smoke in the direction of the user when opening the door/lid

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS20250109862A1Method and apparatus for venting a cooking apparatus
Publication Date: 2025.04.03 MIDEA GROUP CO LTD
  • US20250109862A1 patent drawing
  • US20250109862A1 patent drawing
  • US20250109862A1 patent drawing

AI summary

A method and apparatus for venting a cooking apparatus. A cooking apparatus may have one or more vents and/or vent openings. The cooking apparatus may include one or more actuators for venting. The cooking apparatus may include a lid. The lid may include one or more vents and/or vent openings. The one or more vents and/or lid may be positionable between a closed position and an open position.