DE102010048421B4 - System consisting of a brewing chamber and a portion capsule with a stopper - Google Patents

Abstract

System consisting of a brewing chamber and a portion capsule (1) with a base element (2) with a cavity in which an installation element (17) and a beverage raw material (16) is provided and which is introduced into the brewing chamber and through which a liquid flows, wherein the liquid flows through the beverage raw material and the built-in element and is then passed out of the portion capsule via an opening (18), with the portion capsule downstream of the built-in element (4) being under essentially ambient pressure, a stopper being provided in its bottom in the opening (18) is characterized in that a mandrel provided in the brewing chamber pushes the stopper out of the base when the portion capsule is inserted into the brewing chamber and / or when the brewing chamber is closed, whereby a large opening is available in the base area.

Description

The present invention relates to a system comprising a brewing chamber and a portion capsule with a base element with a cavity in which a built-in element and a beverage raw material are provided and through which a liquid flows, wherein the liquid flows through the beverage raw material and the installation element and then as a finished beverage passed through an opening from the portion capsule.

Such portion capsules are known from the prior art, for example EP 0 211 511 A1 , of the DE 1 924 552 , of the DE 20 2005 021 160 U1 as well as the DE 60 2004 007 881 T2 known and are used for coffee and espresso production. This usually creates a so-called crema, which is not desirable in some users.

It was therefore the object of the present invention to provide a system wherein no crema occurs in the resulting coffee beverage.

The problem is solved with a system according to claim 1.

The present invention relates to a system with a brewing chamber and a portion capsule for the preparation of a beverage. The portion capsule has a cavity in which a beverage raw material is provided. Such a portion capsule is made for example of plastic, a natural substance and / or a biodegradable material and according to the invention has a base element, in particular a deep-drawn base element, which is preferably frusto-conical or cylindrical in shape. The beverage raw material, preferably coffee, which is extracted and / or dissolved, for example, from a liquid, in particular water, is introduced into the cavity of the portion capsule. Furthermore, the portion capsule has a built-in element, which is preferably located downstream of the beverage raw material. Preferably, the base element is closed after filling the installation element and the beverage raw material in particular with a membrane. The membrane is preferably provided opposite the bottom of the base member. The membrane may be made of the same or a different material than the base member and is preferably secured to the base member by sealing and / or gluing.

To produce the coffee beverage, a liquid is passed into the capsule, which first flows through the beverage raw material and then the installation element. Thereafter, the beverage thus finished flows through an opening in the base element, in particular into its bottom, into a collecting container, for example a cup.

According to the invention it is now provided that downstream of the installation element d. H. After the liquid has flowed through the installation element, substantially ambient pressure prevails, ie. that the finished beverage is then no longer exposed to greater pressure losses. As a result, a turbulence of the finished beverage is avoided, which could lead to an air intake and thus to a foaming.

Preferably, the pressure loss between the downstream side of the cartridge and the environment is less than 2, preferably less than 1, more preferably less than 0.5, and most preferably less than 0.2 bar. More preferably, the pressure of the fluid is below the Built-in element only as large as a pressure loss, which occurs at normal flow velocities in a pipeline without internals, which extends from the mounting element to the container.

According to the invention, the portion capsule according to the invention has a means which makes the outlet opening in the base element, around an existing piercing mandrel, so large that no appreciable pressure loss occurs there.

Therefore, according to the invention, a plug is provided in the base element which is removed from the mandrel by the base element. This results in a very large opening, which does not produce any appreciable pressure loss in the liquid. Preferably, a seal is provided between the plug and the base element, in particular the plug and the bottom of the base element, in order to prevent particles from escaping from the capsule and / or that the contents of the capsule significantly lose aroma. This seal is preferably provided on the plug. Preferably, the gasket is an elastic, rubbery material having food approval. Preferably, the seal is provided as a circumferential structure.

According to a further preferred embodiment, the portion capsule has a weakening at its bottom. This weakening is a local reduction in the wall thickness of the soil, without the portion capsule is leaking at this point. The weakening can be incorporated, for example, during deep drawing in the bottom of the portion capsule and / or after deep drawing, for example with a laser.

The weakening can be provided as a line with a beginning and an end. Preferably, however, the weakening is provided as a circumferential line, which is for example circular, oval, rectangular or square.

Preferably, the weakening when opening the capsule is at least partially severed. An only partial sectioning of the weakening has the advantage that the capsule bottom remains in one piece, d. H. that when severing the weakening, a kind of lid is created which remains connected to the floor. In the event that the severing is complete, it is preferably ensured that the separated part falls on opening in the capsule and / or is pressed so that it can be disposed of with this.

In the following, the invention is based on the 1 - 4 explained. These explanations are merely exemplary and do not limit the general inventive concept.

1 shows a first embodiment of the portion capsule in the brewing chamber of a coffee machine.

2 shows a further embodiment of the portion capsule.

three shows details of the portion capsule according to 2 ,

4 shows a modification of the portion capsule according to 2 ,

1 shows a first embodiment of the portion capsule according to the invention 1 in a brewing chamber 4 , This brewing chamber 4 consists of a first brewing chamber element 4.1 and a second brewing chamber element 4.2 wherein the first brewing chamber element is provided to introduce the portion capsule movable relative to the second brewing chamber element or vice versa. Between the two brewing chamber elements 4.1 . 4.2 a seal is provided. The portion capsule 1 has a conical base element 2 on, that is a wall area 2.2 and a floor area 2.1 Has. In the base element 2 a cavity is provided in which a mounting element 17 , here a sieve, as well as the beverage raw material 16 located. The cavity is through a membrane three sealed, which is sealed or glued to the edge of the base member. To make a beverage, liquid is added through a liquid inlet 6 provided, if necessary by means of a valve 7 is reduced in its pressure. Then flows the liquid, for example, hot water in the production of coffee, via a puncture 8th , here a spike, the membrane three perforated, into the capsule 1 a (reference numeral 9 ). In the capsule, this liquid flows through the beverage raw material 16 and extract and / or dissolve the substances required for beverage production from the beverage raw material. The flow of the liquid in the beverage raw material is indicated by the reference numeral 10 symbolizes. Thereafter, the liquid flows through a built-in element 17 , here a sieve, which is needed to prevent components of the beverage raw material particulate into the resulting beverage. Downstream of the installation element 17 a cavity is provided, which is flowed through by the finished beverage, before it over a through the mandrel 15 manufactured opening 18 in the ground area 2.1 of the base element 2 and flows through appropriate piping into a collecting container, for example, a cup. According to the invention it is now provided that the pressure 12 downstream of the installation element 17 essentially the ambient pressure 14 where ambient pressure is to be understood as meaning that, compared to the ambient pressure, the pressure 12 only increased by the line pressure loss that occurs at normal liquid flow rates. Because of that in the field 12 Ambient pressure prevails, the resulting beverage, as far as it is a coffee beverage, have no crema.

2 shows an embodiment of a portion capsule. In the present case is in the floor area 2.1 of the base element a plug 11 provided by the thorn 15 when introducing the portion capsule into the brewing chamber and / or closing the brewing chamber from the bottom area 2.1 is pushed out, whereby a comparatively large opening in the floor area is available. This opening is so large that the liquid undergoes only a comparatively small pressure loss as it flows through.

three shows a detail of 2 , It can be seen that the grafting 11 by undercuts 2.3 in the ground area 2.1 is held. Through the mandrel, this plug is pushed out of the bottom area.

In the embodiment according to 4 In addition, a built-in element is in turn a sieve 17 intended.

LIST OF REFERENCE NUMBERS

1

portion capsule

2

base element

2.1

floor area

2.2

wall area

2.3

undercut

3

membrane

4

brewing

4.1

first brewing chamber element

4.2

second brewing chamber element

5

poetry

6

liquid inlet

7

Valve

8th

Piercing, piercing spike

9

Liquid entry into the capsule

10

Flow in the beverage raw material 16

11

Graft

12

Pressure downstream of the installation element 17

13

Pressure downstream of the capsule

14

ambient pressure

15

Aufstechdorn

16

beverage raw material

17

Built-in element, sieve

18

Opening in the floor area

Claims (1)

System consisting of a brewing chamber and a portion capsule ( 1 ) with a base element ( 2 ) with a cavity in which a built-in element ( 17 ) and a beverage raw material ( 16 ) is introduced and which is introduced into the brewing chamber and is flowed through by a liquid, wherein the liquid flows through the beverage raw material and the installation element and then via an opening ( 18 ) is passed from the portion capsule, wherein in the portion capsule downstream of the mounting element ( 4 ) is substantially ambient pressure, wherein in its bottom in the opening ( 18 ) a stopper is provided, characterized in that a mandrel provided in the brewing chamber during insertion of the portion capsule into the brewing chamber and / or when closing the brewing chamber pushes the plug out of the bottom, whereby a large opening in the bottom area is available.

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