DE8316614U1 - MOBILE TAP DEVICE FOR SOFT DRINKS - Google Patents

Description

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Dlpl. "Ing. Heinz Strieker Corridor tr. 50

4937 location

Mobile dispensing device for soft drinks

The invention relates to a mobile dispensing device for soft drinks according to the preamble of the claim

Such a dispensing device is the subject of the older utility model 82 21 988. In contrast to conventional ones known dispensing devices, in which as a pressure generator a pressurized gas cylinder is provided which has a considerable weight, the filling of which is relatively expensive, the After emptying it has to be replaced in a laborious manner by a filled pressurized gas cylinder and its handling by the layperson is a considerable source of danger represents leads the use of an air compressor to a dispensing device in which an exchange of the Pressure generator is omitted and their handling as a whole is much simplified.

The invention is based on the object of designing a dispensing device of the type mentioned at the outset in such a way that that the quality and shelf life of even such sensitive beverages as beer are guaranteed, if the tapping device is used in unclean ambient air, such as in smoke-filled interiors

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- 5 or near barbecue facilities.

This object is achieved with the measures of the characterizing part of claim 1 in a surprisingly simple and effective way.

The invention is based on the knowledge that the design of the sterile filter located in the intake path of the air to be compressed is of particular importance. With the sterile filter designed according to the invention, quality is reduced . gen of the drink excluded at least if that

Drink intended for short-term use is like this is typical for family celebrations, parties and the like.

Ϊ In a further embodiment of the invention, the sterile filter has a degree of separation of at least 99.998 particle% for particles with a particle size of 0.3 micrometers .

Since such sterile filters inevitably clog after a certain period of operation, the sterile filter is preferred easily interchangeable built-in. In order to increase the useful life of the sterile filter, the air filter arrangement expediently a coarse filter connected upstream of the sterile filter.

To create a compact device, the cooling device and the air compressor are expediently accommodated in a common housing . The air compressor can, however, also be designed as a unit that is structurally separate from the cooling device. In this way, in particular, already existing mobile dispensing devices of the type mentioned at the outset can be retrofitted for air compressor operation.

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! <Vm ejfen desired tap pressure ensure 1st Air · *

-] compressor advantageously with a pressure regulator (pressostat)

:, equipped, whereby the pressure level is fixed or £> e-

I can be freely adjusted * Ajif the pressure side of the Kompreo-

' sors, it is advisable to

J · speaking check valve arranged. This valve I prevents pressure from occurring even if the compressor is not completely tight.

I. waste in the storage tank and thus a reduction in quality

I. of the drink. On the other hand, to ensure that the

f for example with an electric squirrel cage motor

I equipped the compressor to ensure that the I Compressor advantageously via a

■ tidy suction valve vented.

A further substantial simplification of the handling can thereby be achieved . that the compressed air line and expediently also the beverage line is assigned a hose pull-out and return device. The hoses can thus be easily pulled out to the required length for connection to the storage tank. If not

The lines are tidy when using the tapping device

and saved to save space * The hose pull-out and -return devices can be installed in the dispensing device and / or the air compressor unit can be integrated. You can-

_v NEN can also be designed as an independent unit.

It is suitable as a hose pull-out and return device Due to the compact design, in particular a hose reel from which the line in question counteracts the force a return spring can be developed.

The beverage line advantageously carries on its from the cooling | device facing away from the end also has a quick-release coupling. The quick release coupling or couplings Γ are preferably equipped with a valve that only,; opens when the coupling is in engagement with a coupling counterpart. The quick-action coupling or couplings are expediently on a housing wall of a housing that accommodates the cooling device and / or the air compressor releasably held. |

The air filter arrangement is preferably at least partially |,

attached to the outside of the housing so that it is easily accessible, |

so that filters can be easily replaced or cleaned kb'n- |

nen. \

The invention is explained in more detail below with reference to preferred exemplary embodiments from. In the accompanying drawing i; nings show:;

1 shows a schematic overall view j

a mobile dispenser, hot which the cooling device, the air compressor and hose reels are combined in a housing; and

Fig. 2 is a schematic overall view ei

ner embodiment in which the Air compressor as a structurally separate unit from the cooling device is trained.

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The illustrated in Fig, 1 mobile dispensing device for soft drinks, in the illustrated embodiment for beer, comprises a housing 1 with a cooling device 2 housed therein, which is maintained by a cooling unit 3 at a target temperature. In the housing ί an air compressor 4 is also arranged as a pressure generator for generating the tap pressure . In order to prevent the compressor from adding oil mist particles that reduce the quality of the beverage to the ambient air it compresses , the compressor 4 is designed to be oil-free. This means that none of the compressor components that could intentionally or unintentionally come into contact with the air flow runs in oil or is provided with a film of oil or grease . A suction line is connected to the suction side of the air compressor 4 , in which there is a suspended matter filter housed within the housing 1 in the form of a sterile filter, which frees the air drawn in from the surrounding atmosphere of bacterial, viral and particulate suspended matter. The sterile filter 6 forms a high-performance particulate filter (ie a so-called HEPA filter or High Efficiency Partical Absorber). The sterile filter is of particular importance with regard to the quality and shelf life of the beverage because it must exclude not only the introduction of bacteria, but also the harmful effects of aerosols in the ambient air, such as tobacco smoke, kitchen fumes and the like.

The sterile filter 6 has a tried and tested design management example on a membrane made of borosilicate as a sterile filter medium in a flat cylinder slightly curved upwards and downwards. This filter medium is hydrophobic

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bierte In this embodiment, the filter is for a Air volume of a maximum of 30 l / min: designed. The degree of separation is 99.998% based on 0.3 micrometers according to the DOP test. The cylinder housing consists of thermally stable polyphores (138 ° C.) and has a connecting nipple at the top and bottom for a hose connection. The diameter of the housing is 56 mm, the total height (including connection nipple) is 70 mm.

Such a filter was tested for its usability with an air volume delivered by the compressor 4 of about 2.4 lmin checked. A measuring device 'Partoskope Type R with 5-channel system 'used. The measuring time was 1 minute in each case. The measuring volume was 28 liters. The room air was at nine measurements the following average particle content:

0.3 micron 442133 0.5 micron 397816 1.4 micron 146646 2.0 micron 59595 5.0 micron 10806

The particle content of the measured test air corresponds to composition of the air in restaurants and the like Clearing, i.e. all suspended matter will be particles (i.e. also includes aerosols (tobacco smoke).

The average particle content of the exhaust air of the Sterile filter was for 26 measurements:

ο, 3 micron 36 (420) ο. 5 mi kron- ■ 25th (292) 1, 4th micron 11th (128) 2, O micron 5 (58) 5, O micron 1 (12)

To produce comparable sizes, the The measured values of the 26 measurements were multiplied by a factor of 11.67 and then 3 measurements were carried out on 28 liters in 11.67 minutes each using a stop watch for control purposes. Since the control measurements were cheaper, the multiplication method was used for safety reasons.

The retention results from the relation of the particles present before the filtration and the measured particles after filtration with a relative amount of air and the same time as follows:

0.3 micron 0.5 micron 1.4 micron 2.0 micron 5.0 micron

0.00095% 0.00073% 0.00087% 0.00097% 0.00111% 0.00463%

0.00093% average retention value.

This result corresponds to an average degree of separation of 99.99907%. In the area of particular interest of 0.3 micrometers, the degree of separation is 99.99905%.

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The experiment was repeated with commercially available carbon dioxide. As a result, it turned out to be in the range of 0.3 Hikro ^ meter out a degree of separation of 99.99908%.

In order to be able to keep the compressor 4 relatively small, the pressure drop across the sterile filter 6 should have a value of approximately Do not exceed 1.2 kpI'cm *.

For the present purposes, among other things, is suitable Sterile filter type MS-40 from LAF-Technik, Hamburg, Federal Republic of Germany. This filter has a '[ Air volume of 5 1 / min a resistance of 5 mm water [ pillar.

The sterile filter 6 can easily be exchanged via detachable connections 7, for example plug connections. ; The suction line 5 leads to a coarse filter 8, for example a sieve, which is outside a housing wall 9 ; is easily accessible and replaceable. At ■:

the pressure side of the air compressor 4 is connected to a compressed air line 10 which carries a quick-action coupling 12 at its end remote from the compressor 4 i. On ; the pressure side of the compressor 4 is a schematic at 33 | Table indicated check valve arranged, which responds to a very slight pressure in a direction opposite to the conveying direction of the air, for example at a pressure of only 1 microbar. A suction valve, shown schematically at 34, is seated on the suction side of the compressor 4. The compressor 4 is ventilated via the valve 34 in order to avoid starting difficulties of the compressor. For this purpose, the suction valve can additionally be provided with a passage of small cross section that is constantly open to the outside air.

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The compressed air line 10 is a hose pull-out and -RÜckhölvörrichPUng in the form of a hose reel 13 assigned, of which the leading out of the housing Part 14 of the compressed air line against the force of a Return spring (not shown) is removable. the Hose reel 13 can in a manner known per se _t be constructed that they automatically after taking off the desired cable length a locking locked to allow for strain relief on the line care for. The lock can be released by briefly tightening and then releasing the cable. The hose reel 13 then winds the part 14 of the Compressed air line 10 until the quick release coupling 12 is withdrawn to the housing bushing 15. in the The housing feed-through area can be on the outside the housing wall 9 a (not shown) holder for releasably receiving the quick release coupling be provided. When using the dispensing device the quick release coupling 12 with a coupling counterpart 17 on a tapping body 18 of a barrel 19 in Intervention brought. The quick release coupling 12 has a valve which normally shuts off the outlet of the compressed air line 10 and only through the intervention with the coupling counterpart 17 is opened.

The cooling device 2 is connected on the input side to a beverage line 21, which has a hose drum 22 corresponding to the hose drum 13 for winding up a part 23 of the beverage line 21 is assigned. The part 23 extends through a housing feed-through 24 and carries on the drain from the cooling device 2

At the end of a quick release coupling 25. When in use, it is attached to a coupling counterpart 26 of a spear 27 * The quick release coupling 25 is useful * as well as the quick release coupling 12, equipped with a valve that normally shuts off the inlet of the beverage line 21 and that only through the mutual Engagement of quick coupling 25 and coupling counterpart 26 is opened. The hose reel 22 is constructed in the same way as was described above for the hose reel 13. The outlet of the cooling device 2 is connected to a tap 28 mounted on the housing 1, via which the beer that has been pressed out of the keg 19 and flowing through the cooling device 2 can be removed.

The air compressor 4 is a pressure regulator (pressostat) assigned, which keeps the dispensing pressure constant.

In the modified embodiment according to FIG. 2 are the Air compressor 4 with pressure regulator 30, the suction line 5 and the air filter arrangement 6, B and the compressed air line and the hose reel 13 to one of the cooling means 2 and the cooling unit 3 are combined structurally separate unit 31, which has its own housing 32. With Known mobile dispensing devices can be retrofitted to such a unit 31. Otherwise correspond The structure and mode of operation of the arrangement according to FIG. 2 are those of FIG. 1.

The hose reels can also be used as a separate assembly are provided. Instead of hose reels you can

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basically also other known hose pull-out and -rütkhölvorrichtungen are used, for example devices such as those used in connection with bit dental treatment chairs for tying and pulling out the instrument hoses.

The air compressor unit 31 can be used for one of the housing 1 it can be set up separately but also mount it directly on the housing 1. To get the in Germany for beer dispensing systems It is sufficient that the beverage line 21 empties automatically when the dispensing device is not used can must can the hose reel 22 below the Cooling device 2 be arranged, and it can instead the quick release coupling 25 is a screw coupling or In any case, a coupling without a shut-off valve is provided "a. Regardless of * whether it is about tapping non-alcoholic beverages or beer, the air compressor has 4 to work oil-free, i.e. via the compressed air line IQ air must not be loaded with oil in the compressor will.

Claims (1)

PATENTANWALT DiPL.-lNG. GERHARD SCHWAN Il I 1 ■ 6 Ml t · ft r * F · ^[i ELFENSTRASSE 32. D-8000 MUNICH 83 Dipl.-Ing. Heinz Stricker Flurstr. 50 493? location Expectations Mobile dispensing device for soft drinks, in particular beer, with a cooling device for the off a storage container with a soft drink that can be removed via a beverage line and a pressure generator for generating a pressure acting on the beverage in the storage container, as a pressure generator an oil-free air compressor is provided, the suction side of which is connected to the ambient atmosphere via an air filter arrangement with a sterile filter and from the pressure side of which a compressed air line exits, characterized in that the sterile f.Liter (6) a hydrophobized sterile filter medium and a degree of separation of at least 99.90 particle% for Has particles with a particle size greater than 0.5 micrometers. Mobile dispensing device according to claim 1, characterized in that the sterile filter (6) has a degree of separation of at least 99.998% for particles with a Has a particle size of 0.3 micrometers. 4 t «It * TELEPHONE! 0ίί / ί0Ιίβ ^ 9> · + ELEkt & ÜHil "Vi | U d! · MBEb ELECTRlCPATENt MUNICH Il l> It I Iip ( *>> (Il 'I 1 t I ι Il t 3. Mobile dispensing device according to claim 1 or 2, characterized characterized in that the sterile filter (6) easily out is installed interchangeably. 4. Mobile dispensing device according to one of the preceding claims, characterized in that the air filter arrangement (6, 8) has a coarse filter (8) upstream of the sterile filter (6). 5. Mobile dispensing device according to one of the preceding claims, characterized in that the air compressor , (4) as structurally separate from the cooling device (2) Ϊ Unit (31) is formed. 6. Mobile dispenser according to one of the preceding claims, characterized in _t that the air filter arrangement (6, 8) at least receiving part to the outside of the air compressor (4) the housing (1, 32) installed easily accessible. 7. Mobile dispensing device according to one of the preceding Claims, characterized in that a check valve (33) on the pressure side of the compressor (4) is arranged. 8. Mobile dispensing device according to one of the preceding Claims, characterized in that a suction valve (34) via which the compressor can be vented is arranged on the suction side of the compressor (4). Il II t • «* · *« II »ι ι" Ί i> • · · * I I I ι ι IJ i «« «III« II t < • · · It I. I c ι ι ι, I - 3 - ΐ 9. Mobile dispensing device according to one of the preceding i claims i, characterized in that the compressed air '■■ line (10) and / or the beverage line (21) is assigned to a' hose extraction 'and return device (13, 22) . ' JO. Mobile dispensing device according to claim 9, characterized in that, indicates that a hose reel * is provided as the hose pull-out and return device (13, 22,) from which the compressed air line (10) or the beverage line (21) can be unwound against the force of a return spring. 11. Mobile dispensing device according to one of the preceding claims, characterized in that the compressed air line (10) and / or the beverage line (21) carry a quick-action coupling (12, 25) at their free end . 12. Mobile dispensing device according to claim 11, characterized in that the quick- action coupling (12, 25J JDi t is equipped with a valve which only opens when the coupling is in engagement with a coupling counterpart / 17, 26). 13. Mobile dispensing device according to claim 11 or 12, characterized in that the quick release coupling (12, 25) is detachably mounted on a housing wall (9) of a housing (1, 32) which accommodates the cooling device (2) and / or the air compressor (4).