Electric Oven Insulation Structure for Faster Outdoor Heating

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Solution Overview

Problem

Existing electric ovens face challenges in maintaining thermal insulation and heating efficiency, particularly when used outdoors, where rapid heat loss occurs.

Innovation Solution

The smart electric oven incorporates a furnace body and cover design with integrated heat preservation spaces and a heating device, along with features like vent holes and deflector caps to manage heat retention and discharge, along with a temperature control unit for precise heating management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the electric oven is used outdoors or for rapid cooking, then cooking speed is improved, but heat loss increases

Engineering Contradiction:
Improvecooking speedVSAvoidheat loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent implements a nested insulation structure where an inner insulation layer and an outer insulation layer are positioned within the heating chamber, with the inner layer closer to the heating element and the outer layer closer to the chamber wall. This nested arrangement creates multiple thermal barriers that trap heat more effectively, reducing heat loss while maintaining rapid cooking capability.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent employs composite insulation materials with different thermal properties in the inner and outer insulation layers. The inner layer uses materials with specific thermal conductivity characteristics to retain heat near the cooking area, while the outer layer uses different materials to prevent heat escape to the environment, creating a composite thermal management system that reduces overall heat loss.

Inventive Principle:
Principle #40Composite materials

2Loss of energy

If thermal insulation is enhanced to reduce heat loss, then energy efficiency is improved, but heating speed may be reduced

Engineering Contradiction:
Improveheat retentionVSAvoidheating speed
Core Design Contradiction:
Loss of energyVSSpeed

Solution Approach 1:

The patent applies local quality by positioning the inner insulation layer specifically near the heating element and cooking area, where heat retention is most critical. The outer insulation layer is positioned near the chamber walls where heat escape to the environment occurs. This localized insulation strategy ensures that heat is retained where needed for rapid heating while preventing energy loss at the boundaries, thus improving both heating speed and energy efficiency simultaneously.

Inventive Principle:
Principle #3Local quality

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 thermal insulation and heating speed by minimizing heat loss, allowing for quicker cooking times while maintaining high temperatures.

Implementation Method 1

a heat preservation space is formed in the cover and the furnace body to slow down heat loss in the heating space

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP4487740B1Smart electric oven
Publication Date: 2026.02.11 HAOHONG ELECTRIC TECH (HUBEI) CO LTD
  • EP4487740B1 patent drawingFigure 1~2
  • EP4487740B1 patent drawingFigure 3~4
  • EP4487740B1 patent drawingFigure 5~6

AI summary

Disclosed is a smart electric oven. The smart electric oven includes a furnace body, a heating device and a cover. The cover can be covered on the furnace body, the cover and the furnace body is formed with a heating space, and the heating device is arranged in the heating space. The cover and/or the furnace body is formed with a heat preservation space to slow down the heat loss in the heating space. The technical solution of the present application can slow down the heat loss speed in the heating space, and maintain the heating space in a relatively high temperature range, thereby improving the heat preservation effect of the smart electric oven.