Cartridge for a water-bearing household appliance

A low-specific-heat-capacity cartridge with multiple chambers addresses thermal instability issues in dishwashers and washing machines, maintaining enzyme activity and reducing costs by minimizing insulation, thus enhancing thermal stability and efficiency.

DE102010002196B4Active Publication Date: 2026-06-18HENKEL KGAA
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Patent Information

Application Number
DE102010002196
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2010-02-22
Publication Date
2026-06-18
Estimated Expiration
2030-02-22

AI Technical Summary

Technical Problem

Existing dosing devices for dishwashers and washing machines face challenges in maintaining the thermal stability of heat-sensitive ingredients like enzymes due to insulation requirements, which increase size and cost, and existing insulation methods are inefficient.

Method used

A cartridge design with low specific heat capacity and quick heat transfer properties, featuring multiple chambers with specific volume and thickness ratios, allows for enzyme storage with minimal insulation, ensuring enzyme activity and reducing manufacturing costs.

Benefits of technology

The cartridge maintains enzyme activity within household appliances by minimizing insulation needs, reducing size and cost, while ensuring thermal stability and efficient enzyme performance.

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Abstract

Cartridge (1), in particular for use in water-bearing household appliances, comprising an enzyme-containing preparation which includes at least one enzyme protein and has a specific heat capacity cp at 20°C of less than 3.8 J / (g·K), preferably less than 3.0 J / (g·K), and which is stored in a cartridge or cartridge chamber (3a, 3b, 3c) with a filling volume between 20 and 500 ml and an average wall thickness between 0.1 and 2 mm, and the cartridge material has a specific heat capacity cp at 20°C of between 1 and 2 J / (g·K), preferably between 1.15 and 1.9 J / (g·K), particularly preferably between 1.5 and 1.8 J / (g·K).
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Citation Information

Patent Citations

  • Improvements in or relating to a container

    EP1759624A2

  • Proteolytic enzymes, their production and use

    GB1243784A

  • Alkaline proteolytic enzyme and method of production

    WO1991002792A1

  • Novel proteases

    WO1993018140A1

  • Protease variants and compositions

    WO1996034946A1