DE3707128A1 - Pressure compensation device for drinks with a high carbon dioxide content - Google Patents

Abstract

To permit drinks with a high carbon dioxide content to be poured out without releasing the carbon dioxide, a pressure compensating device has been devised which is composed of a plurality of stages. In the through-flow direction of the drink there is arranged a choke stage, which is followed by a widening of the through-flow cross-section, which is followed in its turn by another choke stage. Connected downstream of the latter there is another widening of the through-flow cross-section and another choke stage etc., until the desired end pressure has been reached.

Description

The invention relates to a device that makes it possible to drink beverages with a high CO₂ content, such as B. cola drinks and wheat beer, in tingling freshness without CO₂ release serving.

Cola drinks and wheat beer are under high container pressure to make a Ent prevent binding of the high stem carbon dioxide content contained in them.

When serving, the beverage is switched from high container pressure to normal air pressure relaxed.

Due to this sudden expansion, a large part of the carbonic acid now escapes strong foaming from the drink, the drink becomes stale.

Expensive compensator taps are known, e.g. B. according to DBP 24 56 170 and DOS 15 32 635, through which the high barrel pressure is throttled when serving and that Beverage can be tapped without great CO₂ release.

Such taps are expensive and have to be adjusted again and again with the help of an adjusting screw be adjusted to always adapt to the existing operating conditions will.

There are also devices that reduce the drink through a reduced Guide cross-section and thus reduce the pressure. Followed by the drinks flow cross section, however, gradually expanded again to its normal size. The devices are only to be used for normal beers etc.

Such a device is also described in note P 36 30 649.5.

However, if the drinks are very carbonated, one is sufficient not such a device, because according to. The flow from the venturi tube increases speed when passing through a narrower cross-section, the pressure becomes less. However, if the flow cross-section is expanded again in this system, the flow rate decreases while the pressure rises again.

The invention has set itself the task of reducing the pressure of the drink to the extent that this is just a little above normal pressure in front of the tap and straight the flow allows.

In the preferred form, the device consists of throttles shaped like an annular gap and then a flow cross-sectional expansion, then again a ring-shaped throttle, etc.

The ring-shaped throttle and flow cross-sectional expansion can each in any number depending on the required operating pressure and carbon dioxide content be lined up.

The advantage of the invention lies in the simple construction, consisting of a tube of uniform inner diameter and the compensator part used.

description

The device consists of a tube 1 . A round holder 2 with two cutouts 3 - view A , FIG. 2 - is inserted into this tube.

Connected to the holder 2 is a circumferential collecting groove 4 , through which the drink can flow in an annular manner into the throttle stage 5 . The throttle stage 5 is round and about 0.4 mm in diameter smaller than the inside diameter of the tube 1 .

When the beverage flows in the direction of arrow A , it is guided through the recesses 3 and the collecting groove 4 into the annular-gap-shaped throttle formed by the throttle stage 5 and the inside tube diameter of the tube 1 . The drink flows through the throttle stage 5 into the cross-sectional expansion 6 at high speed. As a result of the slower flow velocity, the pressure from the kinetic energy not reduced in throttle stage 5 builds up again and flows from there into the next throttle stage 5 .

Here pressure is built up again, while the flow rate increases again.

In the subsequent cross-sectional expansion 6 , the flow rate slows down and the residual pressure builds up again.

This alternation of throttling and residual pressure build-up and again throttling etc. can be repeated until the final pressure has reached the desired size and the beverage flows from the last throttle stage 5 into the continuous cross-sectional area of the cone 7 . There the drink is gradually returned to the original cross-section of the tube.

The throttling can also be done in other ways, for example with the help of disks Throttle bores, each followed by a cross-sectional expansion, etc.

Since the tube 1 can be of any length, any number of throttle stages 5 with subsequent cross-sectional enlargements 6 can also be arranged.

The beverage line 9 can be connected directly to the pipe 1 . The pipe 1 can be fastened in the seat 10 of the tap 11 .

Claims (3)

1. Pressure compensator for carbonated beverages, characterized in that throttling flow cross sections are arranged in a flow system, each of which is followed by an increase in the flow cross section and then again a throttling flow cross section. 2. Pressure compensator according to claim 1, characterized in that the throttle and cross-sectional expansion 6 are arranged in any number. 3. Pressure compensator according to claims 1 and 2, characterized in that a cone 7 is connected seamlessly to the last throttle piece 5 .