Detachable Baking Pot Sealing for Heat-Loss Control

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Solution Overview

Problem

Existing large-volume pressure cookers with baking functions suffer from heat loss due to hot air flowing through gaps between the inner and baking pots, and inefficient bottom heating due to heat distribution issues.

Innovation Solution

A cooking utensil with a baking pot and a support assembly that includes a sealing component to prevent hot air from flowing below the baking pot and concentrate bottom heating by sealing the gap between the inner and baking pots.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the baking pot is placed inside the inner pot with a gap between them, then the baking pot can be detachably installed for versatility, but hot air flows through the gap causing heat loss and reducing baking efficiency

Engineering Contradiction:

Improvedetachable baking pot installationVSAvoidheat loss through gap

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

A sealing ring made of flexible material is placed at the bottom edge of the baking pot to seal the gap between the baking pot and inner pot, preventing hot air from flowing through the gap while maintaining the detachable structure

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

A support assembly with sealing components acts as an intermediary between the baking pot and inner pot, blocking the gap to prevent heat loss while allowing the baking pot to remain detachable

Inventive Principle:

Principle #24Intermediary (Mediator)

2Power

If the bottom heater heats the inner pot, then supplementary bottom heating is provided, but heat distributes to the entire inner pot instead of concentrating at the bottom of the baking pot, reducing baking efficiency

Engineering Contradiction:

Improvebottom heating capabilityVSAvoidbaking efficiency

Core Design Contradiction:

PowerVSProductivity

Solution Approach 1:

The support assembly divides the inner pot space into an upper baking space and a lower heating space, concentrating the bottom heater's heat in the lower space beneath the baking pot, preventing heat from distributing throughout the entire inner pot

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealing ring at the bottom edge of the baking pot blocks the gap, confining the bottom heater's heat to the space below the baking pot and directing it upward through the bottom of the baking pot rather than allowing it to distribute throughout the inner pot

Inventive Principle:

Principle #30Flexible shells and thin films

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 solution effectively reduces heat loss and improves baking performance by concentrating heat at the bottom of the baking pot, ensuring higher temperatures and better baking results.

Implementation Method 1

a support assembly connected with the baking pot and comprising a sealing component, the support assembly preventing the hot air from flowing into a space below the baking pot through a gap between an outer side of the baking pot and an inner side of the inner pot

Methodology Applied

Scientific EffectSealing: Physical Containment

Implementation Method 2

a baking seat which generates hot air, a cover comprising a hot air duct extending from the baking seat to the inner pot

Methodology Applied

Scientific EffectHot air generation and convection: Convection

Implementation Method 3

when a supplementary bottom heating is needed by means of a heater located at the bottom of the inner port, the heat generated by the bottom heater can also flow upwards

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4280920B1A cooking utensil

Publication Date: 2025.01.29 ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD

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AI summary

The invention provides a cooking utensil comprises a body comprising an inner pot (1), a baking seat (3) which generates hot air, a cover comprising a hot air duct (35) extending from the baking seat (3) to the inner pot (1), and a baking assembly (2) detachably provided in the inner pot (1) and comprising a baking pot (21) for receiving food and a support assembly (20) connected with the baking pot(l). The support assembly (20) comprises a sealing component and prevents the hot air from flowing into a space located below the baking pot (21) through a gap (100) between an outer side of the baking pot (21) and an inner side of the inner pot (1). The support assembly divides the inner pot into an upper space and a lower space, thus can prevent the hot air blown from the top from flowing to the lower space and can also concentrate the heat generated by the bottom heating plate in the lower space to heat the bottom of the baking pot when necessary, so as to prevent the heat from flowing upward through the gap between the inner pot and the baking pot, thereby improving the baking performance.