DE2813583A1 - Dissolving carbon di:oxide in water - by passing through porous body in water using flow-generator driven by carbon di:oxide; used to produce carbonated drinks - Google Patents

Abstract

Flow generating elements driven by CO2 gas itself are used in a process for impregnating water with CO2 by pressing CO2 through the pores of a porous, e.g. ceramic, body in water and setting up a light flow of water at least in CO2 outlet zone. The flow-generator may be a screw-, blade- or turbine-like impeller. The process can be used to carbonate water, esp. in the home, partic. with the addn. of ice blocks. The re-combination of fine bubbles to larger bubbles is prevented. A high bubble concn. near the ceramic body is suppressed.

Description

"Process for impregnating water with carbon dioxide

The invention relates to a method according to the preamble of the claim 1.

In the production of carbonated beverages, various occur Difficulties and problems. A major problem is keeping the water as possible To be impregnated with carbon dioxide to the point of saturation, i.e. a high concentration to generate carbon dioxide in the water and over a longer period of time, especially the consumption time, maintain.

When it comes to impregnation, you can choose between chemical and physical Differentiate binding of carbon dioxide in water. Only a small part of the carbon dioxide reacts chemically with the water to form carbonic acid. The vast majority Part of the carbon dioxide only remains physically dissolved in the water.

The larger the bubbles of the carbon dioxide physically dissolved in the water are, the stronger the buoyancy to which the bubbles are subject. One tries therefore known to keep the vesicles small. For this purpose it is known the carbon dioxide under increased pressure through the pores of a porous, in particular to push the ceramic body into the water. Due to the fine pores of the ceramic Body is inevitably an optimal condition for good, lasting physical Impregnation of the water created.

The disadvantage of fine impregnation of the water is the fact that that the fine gas bubbles have so little buoyancy that they are dense Cloud hanging in the water near the ceramic body. Due to the high concentration of bubbles in an area at which during the consumption of carbonated water New carbon dioxide gas is constantly being supplied in finely dissolved form, inevitably occurs the collision of individual bubbles leads to a reunion of the bubbles larger bubbles. This results in the desired effect of the fine pores of the ceramic body for the most part repealed.

It is therefore known in one for impregnating water with carbon dioxide gas Serving container a flow generating element in the form of a screw-like To store the sash, for example via magnetic couplings from the outside without contact driven can be. This creates a slight current in the water through which the fine Vesicles near the ceramic element are slowly carried away5 so that too high a bubble concentration in the vicinity of the ceramic body prevented can be.

However, the drive of such a flow generating element brings a considerable effort and considerable difficulties.

It is the object of the invention to avoid these disadvantages and a Specify process in which there is a risk of the reunion of the finest vesicles to avoid larger bubbles reliably in a much simpler and cheaper way can be.

This task is accomplished by the measures of the characterization of the claim 1 solved.

In this way, the drive of the flow generating element superfluous from the outside. A drive device as such can be entirely be avoided. Instead, it will come with great benefit and significant savings the energy inherent in the pressurized carbon dioxide gas for propulsion of the flow generating element exploited. This can be done by having a Drive section of the flow generating element in the supply line for the carbon dioxide gas in the area immediately before entering the ceramic body is exposed to the direct action of the gas flow.

However, a direct action of the ceramic is preferred Finest gas bubbles escaping under pressure onto the wings or the like Flow generating element. On the one hand, this creates a separate drive section as a rule superfluous for the flow generating element. To be another the otherwise occurring sealing problems at the junction between the The flow generating element lying in the water and the one in the gas supply line lying drive section avoided.

You can see the fine gas bubbles as they exit direct onto the surfaces of the wings or the like of the flow generating element, in order to simultaneously drive this and the gas bubbles or the one containing the gas bubbles Redirecting water and putting it in a gentle flow, which is sufficient for the gas bubble concentration in the vicinity of the ceramic element so far that the risk of a Reunification of gas bubbles to form larger bubbles to a considerable extent is excluded.

The water can be in the treatment zone or before entering the treatment zone be cooled. Because the new method is particularly suitable for household use carbon dioxide-containing water prepare, it has proven to be special Proven to be advantageous when one is in the amount of water in the contact zone Bring in simple pieces of ice at will, as they are usually found in the household refrigerator are generated and available.

Due to the large surface area of these smaller pieces of ice results an optimal cooling effect without the use of a special cooling device.

The flow generating element can be designed or helical be provided with blade or turbine-like elements.

It is expediently in the immediate vicinity of the ceramic element freely rotatable.

Claims (3)

Claims 1. A method for impregnating water with carbon dioxide, in the case of the carbon dioxide under pressure through the pores of a porous body into the water is pressed and the water means at least in the exit area of the carbon dioxide a drivable flow generating element, such as screw, blade or turbine-like wheel, set in a slight current, d a d u r c h g e k It is noted that the flow generating element with the aid of the carbon dioxide gas self propelled. 2. The method according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the carbon dioxide gas initially through a drive zone of the flow generating element and then sent to the porous body. 3. The method according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the emerging from the porous body gas bubbles directly on the Drive area of the flow generating element for driving the flow generating element guided and at the same time diverted by this and passed on in a gentle current will.