Device for preparing a liquid beverage from a cartridge

Abstract

The device has a capsule holder receiving and supporting a capsule and detachable from a pressurized fluid supply unit. An injection unit (5) is provided through an injection support i.e. disc, of the supply unit, and movable in engagement to the capsule. An elastic ring (16) is associated with the injection unit for carrying out local and direct sealing between the injection unit and an injection wall of the capsule. An activation system applies a locking effort of the supply unit against a support side (40) of the capsule holder and an edge (34) of the capsule. An independent claim is also included for a method for reducing liquid resurgence or gas-liquid mixture through an injection point of a capsule.

Description

technical field [0001] The invention relates to a device for preparing a liquid beverage from a cartridge. The invention relates in particular to the preparation of hot or cold drinks from a cartridge containing one or more food ingredients. Background technique [0002] There are various types of systems for preparing beverages from cartridges. It is preferably desirable to insert the cartridge into the machine in a rather straightforward and uncomplicated manner, and to allow easy removal of the cartridge after use. [0003] A problem with some systems comprising cartridge support means incorporated in the machine lies in the fact that it is difficult to prevent any contact between the beverage and the machine. These systems are not suitable for multi-beverage use due to the frequent contact between the beverage and the cartridge support. This creates cross-contamination issues and hygiene issues, especially in the case of certain ingredients such as milk. [0004] Sys...

AI Technical Summary

Problems solved by technology

However, systems such as this are still relatively complex and require a good fit between the fluid unit of the machine and the injector belonging to the cartridge holder when connecting

Fitting accuracy is difficult to achieve and may be adversely affected during use of the system

This system may also pose the problem that, when the cartridge is pressurized, peeling may occur in the area where the membrane forming the injection face is sealed against the edge of the cartridge body

When clamping is applied to the cartridge itself, a firm grip on the seal itself may cause the cartridge to be crushed, or alternatively may cause the seal and thus the sealing condition to deteriorate rather quickly

Another problem is that if the seal is performed around the edge of the cartridge, the injection fluid may partially cover the outer surface of the cartridge and this is not hygienic

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