Liftable baking net structure for oven

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Solution Overview

Problem

Existing electric ovens have inefficient thermal energy use due to a fixed baking net position, which does not adapt to varying food quantities and volumes, leading to suboptimal heating performance.

Innovation Solution

A liftable baking net structure with a connecting rod mechanism and positioning system that allows the baking net to move vertically closer to the heating assembly, improving thermal energy use efficiency and facilitating easy removal after baking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the baking net is placed at a fixed position below the heating assembly, then the structure is simple and stable, but the thermal energy use efficiency decreases due to inability to adapt to varying food quantities

Engineering Contradiction:

Improvethermal energy use efficiencyVSAvoidbaking net structure complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The baking net is transformed from a fixed static structure to a dynamic liftable structure. The connecting rod mechanism enables the baking net to move vertically along guide grooves, allowing it to adapt its position dynamically based on food quantity and volume, thereby improving thermal energy efficiency without requiring complex control systems

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The lifting support structure is divided into multiple components including guide grooves in the inner housing, connecting rods, and positioning mechanisms. This segmentation allows each component to perform a specific function while working together to achieve the overall goal of adjustable positioning, resolving the contradiction between simplicity and adaptability

Inventive Principle:

Principle #1Segmentation

2Loss of energy

If the baking net is positioned closer to the heating assembly for better thermal efficiency, then energy efficiency improves, but the user cannot easily remove the baking net after baking

Engineering Contradiction:

Improvethermal energy use efficiencyVSAvoidbaking net removal convenience

Core Design Contradiction:

Loss of energyVSEase of operation

Solution Approach 1:

The connecting rod mechanism acts as an intermediary between the user's manual input and the baking net positioning system. By operating the handle, the user activates the connecting rod mechanism which then smoothly lifts or lowers the baking net along the guide grooves, providing both precise positioning for thermal efficiency and easy removal when needed

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The positioning mechanism includes a handle that can be manually operated by the user to adjust the baking net position. The system serves itself by allowing direct user control through simple mechanical operation, eliminating the need for motors or complex automation while maintaining both positioning accuracy and ease of removal

Inventive Principle:

Principle #25Self-service

3Loss of energy

If a lifting mechanism is added to allow the baking net to move vertically, then thermal energy efficiency improves, but the device complexity increases

Engineering Contradiction:

Improvethermal energy use efficiencyVSAvoidconnecting rod mechanism complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

Instead of using electric motors, sensors, or automated control systems to position the baking net, the invention employs a purely mechanical connecting rod mechanism. This mechanical system converts simple rotational motion of the handle into vertical linear motion of the baking net, achieving the desired functionality while minimizing complexity and avoiding electronic components

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Rather than having the baking net move on its own or being pulled by a motor, the invention inverts the approach by having the user directly control the position through the handle. The connecting rod mechanism translates this user input into the appropriate motion, simplifying the overall system by placing the control function where it is most naturally executed

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS11470849B2Liftable baking net structure for oven

Publication Date: 2022.10.18 FOSHAN JUGUAN METAL MFG CO LTD

AI summary

A liftable baking net structure for an oven includes an inner housing, a lifting support mounted inside the inner housing, and a connecting rod mechanism mounted outside the inner housing. A vertical first guide groove is opened in a side wall of the inner housing. The connecting rod mechanism is connected to the lifting support via a connecting member passing through the first guide groove. The connecting rod mechanism drives the lifting support to move vertically along the first guide groove in the housing.