DE102010049719A1 - Extraction device, useful for beer production using natural hops for solid-liquid extraction from undistributed extractable materials by liquid extraction agent, comprises container, which is provided with a solid extraction product - Google Patents

Abstract

Extraction device (40), preferably for beer production using natural hops for the solid-liquid extraction from undistributed extractable materials by a liquid extraction agent, comprises a container (15), which is provided with a solid extraction product (31), preferably natural hop, tea or herb. The solid extraction product is passed through the liquid extraction agent (30), preferably water or wort. The extraction agent is introduced through at least one centrally arranged, distributor pipe (2) with openings so that the flow paths between the openings and the sieve are equidistant. Extraction device (40), preferably for beer production using natural hops for the solid-liquid extraction from undistributed extractable materials by a liquid extraction agent, comprises a container (15), which is provided with a solid extraction product (31), preferably natural hop, tea or herb. The solid extraction product is passed through the liquid extraction agent (30), preferably water or wort. The extraction agent is introduced through at least one centrally arranged, distributor pipe (2) with openings so that the flow paths between the openings and the sieve are equidistant, and a nearly uniform flow is provided through the extraction product. The enriched extraction agent is collected in a space between the sieve and a container wall. The openings are arranged apart from a lateral inlet region, over the height of the bed of the extraction product.

Description

The invention relates to a device for extracting ingredients from solid extraction material, for example natural hops by means of a liquid extractant, for example, beer wort. This extraction device can be used in particular for efficient leaching of hop aromas from natural hops. Likewise, the extraction device can be used to extract tea or herbs.

In a sub-process of beer production, wort boiling, the hot beer wort is mixed with hops or hop preparations to, among other things, convert the hop aromas into the wort. Usually this prepared hop preparations, such as hop pellets or hop extract are used because these products are easier to store and dose. These products are either added directly to the wort kettle during wort boiling or presented in flushable dosing containers.

Many breweries are brewing again using traditional methods, using natural hops again, among other things.

For the use of natural hops the following devices and methods are known.

Manual addition of the natural hops into the wort kettle and cooking the hops. The emptying of the wort kettle then takes place via various screening devices, which then largely retain the leached-out umbels. A disadvantage of the known devices is that in this case the hot wort is undesirably strongly aerated. This aeration of the hot wort leads to a reduction in wort quality. Another disadvantage is that when using tube bundle or plate heat exchangers, the umbels easily lead to clogging and occupancy problems on the heating surfaces.

There are simple stationary trough-shaped sieves. The disadvantage of this embodiment, the remaining washed-out solid must be removed manually after each batch and also cleaned manually.

Furthermore, sieves in pipes are known, with discharge devices, such. B. screws are equipped. The discharge process can be automated in this way. However, the undesirable ventilation effects also occur here. In addition, the complex mechanics are usually difficult to clean and therefore pose hygienic risks.

Also, devices and methods are known similar to a so-called "tea-egg" in which the hops are placed in a perforated container and then placed in the wort kettle. After boiling the wort, the leached natural hops can be easily removed again without the umbel leaves in the wort kettle being distributed undesirably. The disadvantage here is that the solids submitted are not flowed through defined. The mass transfer is often very poor in the solids bed, especially since even a complete wetting with the wort can often not even be achieved.

To avoid the ventilation effect closed containers are still known in round or square shape, which are equipped on the side walls with sieves. Here, the natural hops is presented in the container, the wort is usually given up or sideways in these devices. When axial flow through a bed in a tube so-called marginality occurs, d. H. Fluid flow is increasingly pushed to the edge with increasing bed height. In particular, at higher heights, the wort flows laterally through this effect, so that deeper lying layers flow through less and less well and thus washed out worse. Thus, no defined flow of the natural hops presented is given by this arrangement and it often occur even at high specific bulk quantities even dry, non-wetted sub-volumes. This has a disadvantageous effect on the utilization of the aroma substances.

Another possibility for using natural hops is the presentation in a so-called lauter tun known. This container is equipped with a flat bottom with a flat sieve bottom and usually entangles a so-called Austrebervorrichtung with the leached Hopfendolden can then be discharged automatically. In this case, low bed heights are selected to leach the bed evenly. The disadvantage here is the large space requirement and the cost of the discharge by means of geared motor. The elaborate mechanics also requires intensive cleaning or involves hygienic risks. Such a lauter tun can also be used to separate natural hops from seasoning when the natural hops have been added to the wort kettle.

The listed solutions for a device for leaching of natural hops have disadvantages in terms of extraction efficiency and consistent quality, often lead to a reduction in the wort quality by unwanted oxygen input, are structurally complex, are difficult to clean and hold hygienic risks.

The invention thus has the object of the device to eliminate the disadvantages described. These objects are achieved by the features specified in the claims.

According to claim 1 has the extraction device according to the invention 40 via a central distribution pipe 2 that with holes 2a about the dumping height of the extraction material 31 equipped so that the liquid extractant 30 in a uniform flow 36 a homogeneous leaching of the extraction material 31 guaranteed.

For a smooth flow 36 even with smaller batch sizes of the extraction material 31 To ensure claim 2 describes an advantageous embodiment, the simple replacement of the central tube 2 in different, adapted to the filling height lengths by means of a suitable flange connection 16 allows. This flange connection can be carried out, for example, advantageously as a bayonet closure or as a milk tube thread, so that it can be easily replaced before loading.

According to claim 3 is another way of adapting to different batch sizes of the extraction material 31 given by the use of a cover 17 of the manifold 2 , so that unwanted bypass flows outside the extraction material 31 be avoided.

An advantageous adjustability of this cover 17 is given by claim 4, for example, by a telescopic design of the cover tube.

Another possibility for adaptation to different batch sizes of the extraction material 31 is according to claim 5 by an adjustable in the manifold 2 set inside, height-adjustable seal. The height adjustment can be done for example by a spindle operable from above.

To avoid the unwanted absorption of atmospheric oxygen and to carry out an automatic cleaning, the extraction device in an advantageous embodiment according to claim 6 with a tight-fitting lid 9 fitted.

An advantageous automatic emptying of the container 15 is according to claim 7 by the lower obturator 10 given.

By the embodiment set forth in claim 8, the container 15 when filled with extractant 30 by an advantageous as close as possible to the lid above cleaning device 13 , a pipe 11 and a suitable closing organ 12 be almost completely vented, so that an undesirable oxygen uptake can be largely avoided.

An advantageous further-reaching avoidance of the oxidation of, for example, wort as extractant 30 is according to claim 9 before filling with extractant 30 by purging with inert gas passing through the manifold 2 or the outlet pipe 7 is supplied and is vented, for example, by the arrangement according to claim 8.

The embodiment features of the invention are illustrated by way of example in the drawings. Show it:

1 Longitudinal section of the extraction device according to the invention

2 Side view of the extraction device according to the invention

3 Exemplary embodiment of the extraction device according to the invention with a cover of the distributor pipe for under-batches

4 Exemplary embodiment of the extraction device according to the invention with a seal in the distributor tube for under-batches

In 1 and 2 the extraction device according to the invention is shown in an embodiment that the container 15 shows that with an inlet pipe 1 and a central manifold 2 for the introduction and distribution of the extractant 30 Is provided.

The extraction material 31 will be in the container 15 through the filling lid 9 submitted. The strainer lying in the container 6 keeps the extraction material 31 back, in the room to the container wall 5 may be the enriched extractant 32 Collect and gets over the spout 7 dissipated. When filling, the outlet pipe 7 through the obturator 8th closed and by opening the closing organ 12 at the cleaning device 13 and cleaning connection 11 the interior of the container 15 so vented 34 become. After completion of the extraction, the washed extraction material 35 by opening the bottom obturator 10 be discharged down.

By suitable cleaning media 33 can the extraction device 40 by means of the above-installed cleaning device 13 in connection with a flow through the inlet pipe 1 and drain from the outlet pipe 7 simply be cleaned.

3 shows an exemplary embodiment for the processing of partial batches, wherein the holes 2a of the manifold 2 along the not with extraction material 31 occupied section with a cover 17 be closed, so that no unwanted bypass flow arises in the uncovered area. This cover 17 This can be performed, for example, telescopically in fixed lengths as well as with adjustable length.

Another exemplary embodiment for processing smaller volumes of the extraction material 31 is in 4 shown, here has the manifold 2 via an adjustable seal 18 so that the track section with the open holes 2a to the respective height of the extraction material 31 can be adjusted.

LIST OF REFERENCE NUMBERS

1

inlet pipe

2

manifold

2a

outlet openings

3

Shut-off device for enema

4

master room

5

container

6

scree

7

outlet pipe

8th

Shut-off device for outlet pipe

9

Cover for filling

10

Shut-off device for solids discharge

11

cleaning connection

12

Shut-off device for cleaning connection

13

cleaning device

14

container rack

15

container

16

flange

17

Adjustable cover

18

Adjustable seal in the manifold

30

extracting agent

31

extraction

32

enriched extractant

33

cleaning media

34

air

35

washed extraction material

36

Flow through the extraction material

40

extractor

Claims (9)

Extraction device ( 40 ), in particular for the production of beer using natural hops, for the solid-liquid extraction from poured extraction products by a liquid extractant by means of a container ( 15 ), in which a solid extraction material ( 31 ), in particular natural hops, tea or herbs and that of a liquid extractant ( 30 ), in particular water or wort, is flowed through, characterized in that the extractant ( 30 ) by at least one centrally located, with openings ( 2a ), distribution pipe ( 2 ) is introduced so that the flow paths between the holes ( 2a ) and the concentrically arranged sieve ( 6 ) are equidistant, so that a nearly uniform flow ( 36 ) through the extraction material ( 31 ) and the enriched extractant ( 32 ) in a space between a sieve ( 6 ) and a container wall ( 5 ), wherein the openings ( 2a ), apart from a lateral inlet area, about the height of the bed of the extraction material ( 31 ) are arranged. Extraction device according to claim 1, characterized in that when processing smaller bulk volumes of the extraction material ( 31 ) to ensure a uniform flow ( 36 ) through the extraction material ( 31 ) the perforated distributor tube ( 2 ) by means of a suitable flange connection ( 16 ), such as a bayonet closure or a milk tube thread, against a manifold ( 2 ) can be exchanged with adapted to the bed length. Extraction device according to claim 1 and 2, characterized in that when processing smaller bulk volumes of the extraction material ( 31 ) to ensure a uniform flow ( 36 ) through the extraction material ( 31 ) the perforated distributor tube ( 2 ) by means of a cover ( 17 ) can be covered so that at lower levels in the upper area no bypass flow over the extraction material ( 31 ), which would lead to a reduction of the extraction result. Extraction device according to claim 3, characterized in that the cover ( 17 ) adjustable and so flexible to different filling heights of the extraction material ( 31 ) can be adjusted. Extraction device according to claim 1 and 2, characterized in that for the processing of smaller bulk volumes of the extraction material ( 31 ) to ensure a uniform flow ( 36 ) through the extraction material ( 31 ) the flow through the perforated distributor tube ( 2 ) by means of an adjustable, inside the distribution tube ( 2 ) sealing ( 18 ) can be changed so that at lower levels in the upper area no bypass flow over the extraction material ( 31 ), which would lead to a reduction of the extraction result. Extraction device according to claim 1 to 5, characterized in that to avoid unwanted oxygen uptake and implementations of an automatic cleaning of the container ( 15 ) by means of a lid ( 9 ) can be tightly closed. Extraction device according to claim 1 to 6, characterized in that the container ( 15 ) with a shut-off device ( 10 ) is equipped for the solids discharge, so that an automatic emptying of the washed extraction material ( 35 ) is possible. Extraction device according to claim 1 to 7, characterized in that to avoid unwanted oxygen uptake a cleaning device ( 13 ) and / or a pipe ( 11 ) immediately under the lid ( 9 ) is installed so that the container ( 15 ) when using the cleaning connection ( 11 ) with the closing member open ( 12 ) can be sufficiently vented. Extraction device according to claim 1 to 8, characterized in that to avoid unwanted oxygen uptake of the container ( 15 ) with submitted extraction material ( 31 ) via the distributor tube ( 2 ) with inert gas, for example carbon dioxide or nitrogen, and by opening a shut-off device ( 12 . 8th ) can be rinsed.

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