DE2229085A1 - Machine for making ice cream - Google Patents

Description

Dipl. Ing. E. E. Finkener HERON ESTABLISHMENT

^Dil ü Vaduz (Liechtenstein)

Bochum

Heinrich-rönijj-Su. Il

MACHINE FOR MANUFACTURING. OF ICE CREAM

The invention relates to a machine for the production of Ice cream, consisting of a freezer box, into which the mixture to be cooled is fed through a pipe that opens into it is introduced, which connects to a special, interchangeable container in which the mix-gas mixture is formed is produced.

In the previously known ice cream machines, the freezer container is fed with the finished mixture of the actual "mix" and the gas necessary to increase the volume, this liquid-gas mixture being produced in a separate, closed and exchangeable container and from there by a pressurized one of the volume increase causing gas standing line or by such a line to the pump is switched of the freezing box supplied guiding ^ ^r see. for example, German Laid-Open Nos. 1,776,158, 1,946,906, 2,015,327 and 2,032,003.

Such machines are relatively small in size and are commonly found on bar counters or in inns and canteens Installed. For these uses, the freezer box and the drive motor of the agitator together with the electrical equipment a block that leads to

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Placement on bar tables etc. is well suited, while the mix container and the gas bottle (if gas is used to generate pressure for the conveyance of the mixture and the formation of the gas-liquid mixture) can be set up at a greater or lesser distance from the freezer box block.

Such machines generally work properly, and there is a risk of harmful germs appearing is low because the whole process takes place in a closed circuit and the gas used is sterile and has a sterilizing effect. The cleaning of the whole apparatus is easy to do by holding the mixing container against it another similar container is exchanged, but in which a liquid containing a cleaning agent is included.

However, contamination by bacteria cannot be ruled out, especially when the mix mixture remains in the container and in the line to the freezer for a long time, as is the case with the discontinuous Operation of the machine is the case, i.e. when the mix mixture in the container is not complete and all at once consumed and stored in a freezer. This risk of contamination is due to the fact that the mix container is exposed to the ambient temperature of mostly heated rooms, whereby this is in the supply line the mixture in the freezer container is particularly affected; this due to the fact that the motor located near the freezer box to drive the agitator in the freezer box is inside

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- ο -

The relatively small space in the chassis creates high temperatures lets (up to 50 and more) be transferred before the mix feed line.

(up to 50 and more) that click on the

A solution to the pending problem of avoiding the excessive development of harmful germs can be can of course be found in the fact that a cleaning period is switched on each time after an interruption in operation will. Another solution has already been proposed in German Offenlegungsschrift No. 2 032 003, namely enclose the mixing container in a refrigerator, in which a constant, but not too low, temperature of E.g. -5 to +10 C prevails. This measure arises for machines with high performance and of the "Monobloc" type effective because the pressure line to the freezer is also in the refrigerator and there opens into the freezer without penetrating the zone influenced by the heat generated by the electric motor. In the case of small machines of the type mentioned at the beginning, however, there is the problem of conduction for the route between the refrigerator and freezer box still open.

According to the present invention, this goal is achieved in a machine for the production of ice cream of the type mentioned achieved in that the line from the container passes to the freezer through a pipe sheath traversed by a cooling liquid.

Further essential features of the invention will become apparent from the following description of the illustrated in the drawings Embodiments result. Show it:

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1 shows a longitudinal section through the machine; Fig. 2 is a partial perspective view of the cooling system

for the line from the container and FIG. 3 shows a longitudinal section of the cooling system according to FIG. 2.

As Fig. 1 shows, the machine consists of a chassis 1 on the serving table 2 with the freezer box 3, whose distribution group 4 protrudes from the chassis. On the chassis there is also the control panel 5 and a Drip catcher 6 on which the cups 7 are placed to receive the finished ice cream.

The serving table 2 has a passage 8 as a connection to the elements arranged under the table, i.e. the the refrigerator 9 connected to the compressor, not shown.

A motor 10 which actuates the agitator 12 is installed in the chassis 1. The motor 10 is connected to the shaft of the agitator 12 by means of belt · - ·; '3 and reduction gear 11 connected.

Through a door 19, the special container 14 is in the Refrigerator 9 introduced, as well as a gas bottle 17 which is connected to the container 14 by means of a line 18.

The container 14 is connected by a connection 21 to a line 15 which protrudes from the refrigerator and opens into the freezer container 3 by means of a second connection 21.

The line 15 is inside a pipe sheath 16 in which

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Spaces between the refrigerator 9 and the freezer compartment 3 arranged. The cooling liquid runs through the agitator disk 16 and is alternately sucked in and driven back through two tubes 20 which open into a housing 22 for the cooling liquid, this housing 22 is located in the Refrigerator 9. A pump 23 circulates the coolant.

The housing 22 can be built into the wall of the refrigerator 9 in order to keep as much frigories as possible.

As can be seen therefrom, the separate container 14, the gas bottle 17 and the line 15 are accordingly located entirely in the refrigerated environment, in a constant temperature range of -5 ° and +10 C. in general.

The refrigerator 9 can be built pressure-resistant, and the line 18 can, in addition to the container 14, also into the refrigerator 9 open. This makes it possible to use thin-walled containers 14, so-called disposable containers, there pressure equalization takes place between the interior of the container 14 and the environment in which it is used »

Of course, the gas bottle 17 can be set up outside the refrigerator 9, in this case it is possible the connecting pipe 18 through a sealed opening.

A machine built in accordance with the present invention is Very well suited, not only for the production of ice cream, but also for ice drinks such as "slushs" and "frozen" carbonated drinks "," soft drinks "etc..

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Claims (6)

Patent claims: Machine for the production of ice cream, consisting of a freezer box into which the mixture to be cooled is poured through a line (15) opening into it is introduced, which connects to a special, exchangeable container (14), in which the mix-gas mixture is formed, characterized in that the line (15) from the container (14) through one of a cooling liquid traversed pipe sheath (16). 2. Machine according to claim 1, characterized in that the lines (20) open into the pipe sheath (16) to the To withdraw coolant and return it to a housing (22). 3. Machine according to claims 1 and 2, characterized in that the housing (22) for the cooling liquid is installed in the refrigerator (9). 4. Machine according to claims 1 and 2, characterized in that a pump in the circuit of the cooling liquid (20, 23, 22, 20, 16) is switched on. 5. Machine according to claims 1, 2 and 3, characterized in that that the housing (22) is inserted in the wall of the refrigerator (9). 6. Machine according to claim 1, characterized in that the pipe sheath (16) is flexible. 209853/0794