Bayonet Pressure Cooker Control Module for Easier Cleaning

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Solution Overview

Problem

Existing pressure cookers face issues with complex maintenance, cleaning, storage, and industrial flexibility due to bulky lids with multiple moving parts, which complicate repair and limit differentiation and ergonomics.

Innovation Solution

A pressure cooking appliance with a bayonet locking system and a removable control module that includes a support for the lid, allowing easy pivoting and locking, combined with a simplified mechanism for manual control and pressure regulation, facilitating easy assembly, cleaning, and product differentiation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a complex force-reducing control mechanism with multiple moving parts is implemented on the lid, then ease of operation is improved, but device complexity and difficulty of cleaning increase

Engineering Contradiction:
Improveease of useVSAvoidnumber of parts
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The control mechanism is segmented into a rotary control arch (11) that rotates independently, a carriage (12) that slides along the arch, and connecting rods (13, 14) that link to the lid rotation axis. This segmentation allows each component to perform a specific function while reducing the overall complexity of the lid structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A rotary control arch serves as an intermediary mechanism between the user's manual input and the lid rotation. The arch converts rotational movement into linear movement of the carriage, which then actuates the lid through connecting rods, providing mechanical advantage and force reduction.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If multiple moving parts are mounted on the lid for safety functions, then reliability is improved, but ease of repair and cleaning become more difficult

Engineering Contradiction:
Improvesafety functionsVSAvoidrepair complexity
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The control mechanism uses dynamic components including a rotary control arch that rotates, a sliding carriage that moves linearly, and connecting rods that pivot. These dynamic elements are designed to be replaceable and accessible, improving ease of repair while maintaining safety functions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control mechanism components (rotary arch, carriage, connecting rods) are extracted as separate, replaceable parts from the lid structure. This allows individual components to be removed and replaced without replacing the entire lid, significantly improving ease of repair and maintenance.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If a bulky lid with multiple components is used, then reliability and safety functions are improved, but storage space requirements increase

Engineering Contradiction:
Improvesafety mechanismsVSAvoidlid bulkiness
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The control mechanism components are arranged in a nested configuration where the sliding carriage (12) moves along the rotary control arch (11), and connecting rods (13, 14) fold or retract when not in use. This nesting minimizes the overall volume occupied by the control mechanism while maintaining all safety functions.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Ease of operation

If a complex control mechanism with multiple parts is implemented, then ease of operation is improved, but manufacturing cost and time increase

Engineering Contradiction:
Improveuser ergonomicsVSAvoidassembly complexity
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The control mechanism is divided into modular segments (rotary arch, carriage, connecting rods) that can be manufactured separately using standardized processes and then assembled. This segmentation reduces manufacturing complexity and allows for parallel production of components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The rotary control arch serves multiple functions: it provides the rotational interface for user input, guides the linear movement of the carriage, and transmits force to the connecting rods. This multi-functionality reduces the total number of parts needed, simplifying both manufacturing and assembly.

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

Data Source

PatentEP4014796B1Bayonet pressure cooker provided with a control module
Publication Date: 2025.08.20 SEB SA
  • EP4014796B1 patent drawingFigure 1
  • EP4014796B1 patent drawingFigure 2
  • EP4014796B1 patent drawingFigure 3

AI summary

The invention relates to a bayonet-type pressure cooking apparatus (1) comprising a tank (2), a lid (3), a support (10), a manual locking/unlocking control element (11) attached to said support (10), a drive conformation carried by the manual control element and a receiving conformation intended to be connected to the lid and to be engaged by said drive conformation, a pressure regulation means, said apparatus being characterized in that it comprises a control module removably attached to said lid and incorporating at least said pressure regulation means and said receiving conformation.