DE20115095U1 - Inner cooker with thin-film post-evaporation in the production of wort - Google Patents

Description

Internal boiler with thin-film post-evaporation in beer wort production

Description

The invention relates to the special design of an internal boiler for beer wort production, with which a post-evaporation in the form of thin-film evaporation also takes place.

Wort boiling is a process within beer production in which

The following objectives are pursued, among others: __

- Sterilization of the wort ■»

- Inactivation of enzymes

- Excretion of proteins

- Dissolution of hop components

- Evaporation of water for higher wort concentration

- Evaporation of aromatic substances (e.g. dimethyl sulphide = DMS)

Various boiling systems are used today for wort boiling. The most commonly used are internal boiling systems and external boiling systems. A boiling time of 60-100 minutes with an hourly evaporation of 6-8% is considered a guide value for an internal boiling system. The boiling time determines the conversion of the precursor of DMS (DMS Precursor = DMSP) into DMS, and the boiling intensity determines the expulsion of the free DMS. However, too high a boiling intensity or too long a boiling time have a negative effect on other parameters for wort quality, including the TBZ (thiobarbituric acid number), the coagulable nitrogen and the color according to EBC.

Today, efforts are being made to minimize boiling times and evaporation rates in order to achieve optimum wort parameters and at the same time to achieve the greatest possible reduction in the energy required for the wort boiling process. In all boiling systems with higher temperatures, where the precursor is converted more quickly into free DMS, evaporation must take place, and a large, moving surface is an advantage. If the boiling times are too short and the evaporation rates are too low, the whirlpool rest following the boiling process leads to further splitting of DMSP into DMS, whereby the threshold value for this value (100 pg/l) can be exceeded because no significant evaporation takes place. To counteract this undesirable effect, additional post-evaporation must be carried out, the implementation of which means additional technical effort, which is sometimes associated with quite high investment costs.

Utility model protection declaration " :·· · ·'·,.· ^: «\JA($OB CARL GmbH, Göppingen

Internal boiler with thin-film post-evaporation in beer wort production

The invention specified in claim 1 solves this problem by technically designing the internal boiler in such a way that it can be used for post-evaporation in the form of thin-film evaporation. This system only requires a structural modification of the known internal boilers and it is also possible to retrofit existing internal boilers without any problems. One advantage is the relatively low investment costs compared to other systems for post-evaporation of wort.

An embodiment of the invention is explained with reference to Figures 1 to 3, which show a longitudinal section through the upper part of the inner cooker which is relevant for the invention.
Show it

Fig. 1 the internal boiler without wort loading for post-evaporation,
Fig. 2 the inner boiler with partial filling of the storage space, without the wort overflowing the retaining plates,

Fig. 3 the inner boiler in operation, with the wort flowing in a thin layer over the retaining plates of the storage space.

The figures show a schematic representation of the internal boiler and its operating principle. The retaining plates (1) form a storage space (2) which is slowly filled by pumping in wort as shown in Fig. 2. In Fig. 3, the wort level exceeds the height of the retaining plates (1) due to the constant pumping of wort into the storage space (2). The wort (4) flows over the upper edge of the retaining plates (1) and in a thin layer down the hot surface of the internal boiler (3), where evaporation takes place.

Utility model protection - Registration · "*; · ·'··· ^# *':JA<£Ofc C^RL GmbH, Göppingen

Back half sheets storage space inner cooker wort

Utility model protection - drawing JACOB CARL GmbH, Göppingen

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Claims (1)

Internal boiler with thin-film post-evaporation during beer wort production, characterized in that a storage space ( 2 ) for the wort ( 4 ) pumped out of the whirlpool and to be post-evaporated is created in the upper part of the boiler by attaching retaining plates ( 1 ), so that when the wort ( 4 ) overflows over these retaining plates ( 1 ), which is triggered by a rise in the level of the constantly supplied wort ( 4 ), a thin-film evaporation takes place on the internal boiler surface ( 3 ) as the wort ( 4 ) flows down evenly.