DE3123289A1 - Process for emptying pressurised dispenser lines - Google Patents

Abstract

A process and an apparatus for carrying out the process which for example forces out the contents of beer lines by means of CO2 gas after use, are described. Filled beer lines, after stagnating for more than three hours, deposit marked slimy residues on the walls. When beer withdrawal is resumed, several glasses must first be discarded (approximately 1 litre for a 4-meter long line). The beer is then usable again. In the present process, the contents are forced out of the line from the CO2 system present in each dispensing system with the aid of an apparatus. The line emptied in this manner is under a CO2 atmosphere. The line remains free of slime. The beer is immediately usable on renewed dispensing. The process enables 1. beer to be hygienically dispensed and 2. the conservation of foods and thus direct material profits of several hundred DM per month and dispensing system. e

Description

The invention relates to a method for emptying pressurized dispensing lines, via which beverage stored in a beverage storage container can be tapped by introducing pressurized gas into the beverage storage container, and to a beverage dispensing system suitable for carrying out the method

The tapping of beverages from beverage storage containers via pressure conveyance is known. Carbon dioxide, COp, is used as the compressed gas of beer, the disadvantage that the drink boarded up in the tap and must be discarded due to the resulting reduced taste quality. The dabe The resulting losses for the innkeeper amount to between 100 and 300 liters / year per tap, depending on the length of the tap.

In the case of beer dispensing systems, there is a further disadvantage that brewer's yeast builds up on the inner wall of the dispensing line if it is not used for a long period of time settles. For this reason, the legislature has ordered a cleaning cycle of a maximum of 14 days for such systems.

The object of the invention is to provide a simple method for emptying the dispensing line in order to prevent the beverage from peeling off and residues that lead to deposits in the dispensing line.! This object is achieved in a method of the type mentioned at the outset according to the invention by the measures specified in claim 1 solved. A gas is introduced into the dispensing line which is under higher pressure than the beverage in the dispensing line, so that the beverage standing in the dispensing line in the beverage storage container is pushed back. The dispensing line is emptied and remains under during the time when no drink is being tapped Gas pressure. If a drink is needed again for serving, the gas is released. Fresh drink then flows into the tap the beverage storage container.

For emptying the dispensing line, it is preferred to do so Tapping existing gas used, claim 2.

A beverage dispenser that is suitable for carrying out the process is, has a / e dispensing line, which with one of its ends in a beverage storage container connected to a gas pressure line

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ORiGiISJAL (NSPECTFO COPY

ι is introduced and which has a tap at its other end. When it is emptied, the tap line in the area of the tap η is a shut-off gas line with a pressure in the; A higher gas pressure can be connected. When opening the gas line; the gas flows into the dispensing line and displaces the beverage in the dispensing line ί. The drink is placed in the drink storage container = brought back.

As already stated above, preference is given to emptying the dispensing line already available compressed gas is used for dispensing. Should the gas pressure required for dispensing when emptying the dispensing line The gas line is connected on the high-pressure side to a pressure pump, the low-pressure side of which is connected to the pressure pump is connected to the beverage storage container guided gas pressure line.

in quick connection and disconnection of the system parts required for emptying the dispensing line is made possible by the fact that on the one hand ti the gas pressure line for the beverage storage container a quick coupling for a line leading to the low pressure side of the pressure pump and on the other hand with the high pressure side of the jerk pump a connection line to be attached to the tap is connected to the shut-off valve.

Le invention is explained in more detail in the following with reference to exemplary embodiments, j Le are shown schematically in the drawing. ^: 5 show in detail:;

Line 1: Beverage dispenser with permanently installed emptying j direction

Line 2: Beverage dispenser with removable emptying device.

si the beverage dispenser shown in Fig. 1 with permanently installed j The emptying device is part of an existing printing system (1) Pressure reducing valve and manometer as well as a gas line with CO .-> filling (2) connected directly to a pressure pump (3)! .T is connected to a dispensing line (4). In the one with the high-: "Back side (5) of the pressure pump (3) connected part 2 'of the gas line (2) there is a shut-off valve (6). From the low pressure side (7) of the; 'uck pump (3) is part 2 "of the gas line 2 with a to a beverage, rratsbehälter (8) guided gas pressure line (9) connected- ι

ORIGINAL INSPECTED

ν. ' I.

The gas line (2) opens into the dispensing line (4) immediately behind a tap (lo) that closes the dispensing line.
If the dispensing line (4) is to be emptied, the shut-off valve (6) is opened after the pressure pump (3) has been started, so that gas enters the dispensing line. Under the gas pressure, which is set higher than the pressure under which the beverage is in the dispensing line - the dispensing pressure in the dispensing line is in the range of 1 bar, the beverage is forced out of the dispensing line (4) into the beverage storage container (8). The drink becomes stale after a long time
Standing in the dispensing line (4) is avoided. The dispensing line (4)
remains - as long as no more drink is to be tapped - under gas pressure which is also in the range of 1 bar. Before tapping again, the gas is released from the tapping line.

A beverage dispenser with a removable emptying device
shows Fig. 2. A quick coupling I is provided on the gas pressure line (9) ', with which the part 2 "of the gas line (2) leading to the low-pressure side (7) of the pressure pump (3') can be connected ) has a connection line (12) which can be connected to the tap (Io) with a shut-off valve (13) and a tap connection (14),

ORIOfNAL INSPECTED COPv

parts list 1 Printing system CVl Gas pipe 3 Pressure pump 4th Dispensing line 5 High pressure side 6th Shut-off valve 7th Low pressure side 8th Beverage storage container 9 Gas pressure line Io Tap 11 Quick coupling 12th Connecting cable 13th stopcock 14th Tap connection

with part 2 ', 2 "

SGINAL INSPECTED "COPY

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Claims (5)

, ^ the. June 4, 1981 Process for emptying pressurized dispensers Patent claims 1. Procedure for emptying pressurized dispensing lines, about the beverage stored in a beverage storage container can be tapped by introducing pressurized gas into the beverage storage container, characterized, that in the dispensing line standing drink by introducing a gas which is under higher pressure than that in the dispensing line standing drink, is pushed back into the drink storage container and that. the dispensing line is kept under a gas atmosphere. 2. The method according to claim 1, characterized in that that too Gas introduced into the beverage storage container is introduced under excess pressure at the tap of the dispensing line. 3. Beverage dispenser for performing the method according to claim 1, in which a beverage storage container connected to a gas pressure line is under gas pressure via a dispensing line is emptied and the ^ apfleitung is inserted with one of its ends into the beverage storage container and at its other End has a tap, characterized, ^{that a lockable gas line (2, 2 f} , 2 ^fl ) with a gas pressure higher than the pressure in the dispensing line (4) can be connected to the dispensing line (4) in the area of the tap (lo). 4. Beverage dispenser according to claim 3 »characterized in that that the gas line (2, 2 ^{! f} ) is connected on the high pressure side to a pressure pump (3), the low pressure side (7) of which is connected to the gas pressure line (9) leading to the beverage storage container, 5. Beverage dispenser according to claim 4, characterized in that the low-pressure side (7) of the pressure pump (3) via a quick-release coupling (11) connected to the gas pressure line (9) with the Gas pressure line (9) can be connected and that the high pressure side (5) of the pressure pump (3) has a connection line to be attached to the tap (lo) (12) with shut-off valve (13) and valve connection (14).