Repositionable Vent Arm for Automatic Cooking Appliance Ventilation

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Solution Overview

Problem

Conventional cooking hoods and vents are ineffective in capturing cooking byproducts due to limited positioning and manual operation, failing to provide adequate ventilation for cooking appliances.

Innovation Solution

A repositionable vent arm system integrated with a cooking appliance that automatically adjusts its position based on thermal or distance sensors to focus ventilation on active cooking elements, using fans for efficient air management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional hoods or vents are positioned approximately 30 inches above the cooktop, then the device structure is simple and easy to install, but the ability to capture cooking byproducts emanating from a particular location on the cooking appliance is limited

Engineering Contradiction:
Improveease of installationVSAvoidventilation efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent implements a repositionable vent arm that can dynamically adjust its position between a retracted position (approximately 30 inches above cooktop) and an extended position (closer to cooking elements). This dynamic positioning allows the system to maintain simple installation while achieving improved ventilation efficiency when needed, directly resolving the contradiction between ease of installation and ventilation effectiveness.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If conventional hoods or vents are operated manually by a user via separate controls, then the device complexity is low, but the coordination between cooking and venting operations is inefficient

Engineering Contradiction:
Improvecontrol system complexityVSAvoidoperational coordination
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The patent combines the venting system with the cooking appliance control system, allowing both functions to be managed through a single integrated control interface. The controller can receive user input to simultaneously control cooking elements and vent arm positioning, eliminating the need for separate manual controls and improving operational coordination while maintaining acceptable system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system incorporates sensors that automatically detect active cooking elements and trigger corresponding vent arm movements without requiring manual user input. This self-service capability improves operational coordination by automatically matching ventilation to cooking activities, while the automated nature of the system actually reduces the complexity of user interaction.

Inventive Principle:
Principle #25Self-service

3Productivity

If a repositionable vent arm is added to the housing, then the ventilation efficiency is improved by positioning closer to cooking elements, but the device complexity increases

Engineering Contradiction:
Improveventilation efficiencyVSAvoidmechanical structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The repositionable vent arm provides dynamic positioning capability that allows the system to achieve superior ventilation efficiency by extending closer to active cooking elements. The mechanical complexity introduced by the repositionable arm is justified by the significant improvement in ventilation performance, and the system includes both extended and retracted positions to provide flexibility.

Inventive Principle:
Principle #15Dynamics

4Ease of operation

If the vent arm is automatically repositioned based on sensor detection, then the operational effectiveness is improved, but the use of energy increases due to automated control systems

Engineering Contradiction:
Improveautomated control effectivenessVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The automated control system operates periodically by detecting active cooking elements and triggering vent arm movements only when needed, rather than running continuously. This periodic operation improves operational effectiveness by responding to actual cooking conditions while reducing energy consumption compared to continuous automated operation.

Inventive Principle:
Principle #19Periodic action

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

Enhances ventilation efficiency by automatically positioning the vent arm closer to active cooking elements, improving the capture of heat, steam, and odors, providing focused and area ventilation for better kitchen air quality.

Implementation Method 1

the controller determines that the first cooking element is active based on a signal from a thermal sensor positioned to detect heat emanating from the first cooking element

Methodology Applied
Scientific EffectThermal radiation detection: Thermal Radiation

Implementation Method 2

a fan coupled to the controller and configured to draw air through the repositionable vent arm

Methodology Applied
Scientific EffectForced convection: Forced Convection

Implementation Method 3

the repositionable vent arm further includes a distance sensor coupled to the controller and configured to sense a distance to an object disposed on the first cooking element

Methodology Applied
Scientific EffectDistance sensing: LIDAR

Data Source

PatentUS11255549B2Cooking appliance with repositionable vent arm
Publication Date: 2022.02.22 MIDEA GROUP CO LTD
  • US11255549B2 patent drawing
  • US11255549B2 patent drawing
  • US11255549B2 patent drawing

AI summary

A venting appliance for use with a cooking appliance including a cooktop with at least one cooking element disposed thereon, where the venting appliance may include: a housing configured to be positioned above the cooktop; a repositionable vent arm coupled to and extending below the housing; and a controller coupled to the repositionable vent arm and configured to determine that a first cooking element among at least one cooking elements is active, and in response thereto, automatically reposition the vent arm to be closer to the first cooking element.