DEP0033431DA - - Google Patents

Description

Engineer Erwin Pilz

Device for freezing small pieces of ice cream in shapes, especially stick ice cream.

In the present moderate establishment. * - ^r the well-known for other purposes freezers or Efthlverfahren means delivers enhanced mascMne and direct refrigerant evaporation, and the defrost by condensing refrigerant vapors ill by creating some special facilities for freezing small pieces of ice in forms, in particular ice lollies, made applicable ·

For the production of small pieces of molded ice with direct Evaporation extremely short freezing times, it is necessary to take precautions to shut down the refrigerator can be avoided for the purpose of defrosting, in addition, for economic reasons, uninterrupted use the chiller is desirable. For storing frozen oil that is not immediately deposited or consumed can be, a deep-frozen container is required, which is also for economic reasons of the for freezing required refrigeration machine with the forms or, alternatively, should be cooled alone Personnel is involved, the simplest and most accident-proof operation must be ensured, ultimately

care must be taken that the operation does not cause cold with loss of air or air ingress into the refrigerant circuit »

The invention meets all of these requirements By using two forms or groups of lorms, one can achieve through Switch over alternately, one frozen and the other defrosted without the refrigeration machine being shut down needs to become. A special Umsehaltorgan made possible the switchover with a single movement, in such a way that also in no arbitrary Üwisehenposition a moment of danger can occur due to the shut-off pressure line. The storage container, which normally in series connection to the freezer form can be, can only be cooled in the middle position of the switching element, the temperature in a known "" / eise is automatically monitored by means of thermostats. By using a special multi-way valve with a mechanical seal for the switching device, in addition to the required sealing of the individual connection points against each other, a secure closure to the outside achieved.

Since the execution of the freezing inrl cutting after the The idea of the invention at the moment of the greatest need for cooling persisted through the simultaneous thawing process in the second form achieved an increase in the capacitor capacity; will, it is possible to adapt the refrigerant injection to the respective refrigeration requirement without the need for a condenser or drive motor need to be designed for maximum performance. In this way, the most economical energy is generated with the least amount of material.

consumption achieved and a share of the air auver lust it usable did"

Compared to machine-cooled systems with; Sole as The device according to the invention is characterized by refrigerant due to the elimination of brine, brine evaporator, circulation pump or agitator, due to the more economical evaporation temperature with the same freezing time or shorter freezing time same evaporation temperature from *

In the drawing, the device is shown in principle and in some details. Ss show:

Fig. Λ a schematic example of the overall

Arrangement*
Figs. 2 to 7 show an example of the execution of a

About the organs according to the invention

in different switching positions and sections · Fig * 2 an axial section along the line A-B in

Switch position I *
Fig. 3 an axial section along the line GD in

Container position II "
Fig. 4 shows a radial section along the line EI in

Switch position I
Fig. 5 a radial section along line 3-1? in

Switch position III
Fig. 6 shows a radial section along line E ~ F in

Switch position II
Fig.7 a radial section along line iS-F in one

any 2-way resolution.

Figure 1 shows the refrigeration unit in which the biscuit molds 1 and 2, the 'dief cooling container 3 as well as the Cooling unit 4-, the expansion valve 5 and the reversing element are built in.

The liquid refrigerant passes through the liquid line 7 to the expansion valve 5 * md after the expansion through the injection line 8 to the reversing valve 6,

In switch position I (Fig. 2 and 4) this is now under vapor pressure refrigerant slides through the pipe 9 to the bisform 2, where it is the ice mass Freezing brings. The pipe 10 returning from its shape is again turned into a pipe by the ITm control valve 6 out through which it reaches the evaporator 12 of the freezer 3. This is now completely evaporated through the pipe 13 Refrigerant brought back to the cooling unit 4, from where it is compressed by the compressor 14 via the Pressure line 15 comes back to Uaisteuerorgan 6. The compressed Refrigerant vapors reach form 1 via the line, where they defrost the frozen -Sises cause the Eüokleitung 17 in turn leads to the expensive organ 6 and from there through, the pipe 18 to the condenser 19 * where it is completely liquefied and can start its cycle again.

In switch position II (Fig.3 and Fig.6) are the Rohi'an connections 9 »10, 16 and 17 sau reversing device 6 blocked, while pipe 8 is connected to 11 and pipe 15 to 18. As a result, the evaporating refrigerant passes from the expansion valve 5 directly to the “evaporator 12 of the freezer container and the compressed gases also take off from the compressor

go through the direct path to the capacitor 19 »without the ice molds 1 and 2 au. This holding position is therefore permitted the sole cooling of the freezer 3f which Z4-6, at night and during production breaks is required.

In the holding position III (Fig.2 and Fig. 5) are compared to the switching position I only the <"ege in the Way swapped that the bisform 1 cooled and the JÜsform is heated. The refrigerant arrives from the expansion valve 5 Via the pipes 8 and 16 to the ice mold 1, from here via 17 and 18 to the evaporator 12 and via 13 to the Eonpress or 14. The pressure pipe 15 in turn leads your organ 6 to the pipe 9 into the ice form 2 to be thawed. The pipe 10 opens into the pipe 18 and brings the refrigerant to the condenser 19 «

In Fig. 7 it is shown that the pressure line 15 is not completely shut off in any intermediate position of the TJmsteuerorgans and therefore no moment of danger (or a malfunction due to activation of the overpressure! From the figure it can be seen that the gas from the pressure line 15 both via the line 9 to ^ ₀ Tm. 2 and back through the line 10 to the pipe 18, as well as directly from 15 to 18 and thus to the condenser 19 can flow «

Instead of being placed in the refrigerated cabinet, the refrigeration machine 4 can also be set up separately, especially for larger systems, and deep-freeze containers 3 and molds can also be separate pieces of lobes without the need for a fundamental change in the device. Depending on requirements, also without changing the principle, pipe 7 ona 13 can be brought into mutual heat exchange and in pipe

line 15 a 4n heater can be installed. The heat exchanger between 7 ^ M 13 allows hypothermia of the Refrigerant and thus brings an increase in the performance of the Refrigeration machine, and is used in particular by Frigen (CFp GIo) be appropriate as a refrigerant. The Eathitzer ensures that the sis molds have no more than condensation temperature when thawing can assume, with which a certain increase in performance can also be achieved.

The surrounding organ 6 (Fig. 2 - 7) consists of the general from the housing a, the ground valve cone b, the sliding base ring c, the sliding ring d, the spring body e, the end flange f, and the spring g.

The valve cone b is rotatable in the housing a and is made strong by the spring g of the mechanical seal pressed into the tapered seat. BTtI. but still penetrating Traces of refrigerant cannot reach the outside, because on the one hand the sliding seal between sliding base ring c and sliding ring d as well as the spring body e prevents the passage to the ipindel and on the other hand the seal η against the -x housing seals off.

To support the spring g and better definition of the valve cone b you can open the stuffing box space between the housing a and the spring body e mib d- ^ ia. Pressure pipe 15 »and the base space between the tapered jihade of the valve cone b and the housing a with the suction pipe 11 through a small Boh =? - connection.

Claims (1)

- 7 -
Claims, 1, device for freezing small pieces of iSis in Norms, especially ice cream, are characterized by the fact that freezing occurs through direct evaporation of calves and thawing happens through condensing refrigerant vapors. 2, device according to claim 1, characterized in that at least two forms (1, 2,) or "GOrmengruppen
are used, one of which is alternately cooled
and the other is heated at the same time. 3, device according to claim 2, characterized in that that switching the cooling, esp. Ileizing process from the JJOrm or form group (1) to the j'orm or form group (2) or by a single movement. 4, Jinrichtung according to claim 1, characterized in that that with the necking machine used for freezing a freezer container (3) is cooled at the same time, 5, ΙΊ device according to claim 1 and 4, sezeich.net that in a certain position of the Ums ehaltorseines (6) the freezer container (J) can be cooled separately, 5, device according to claim 1, characterized in that that a multi-way valve with sliding ring / spindle seal for the overhead torsan (6) is used, 7 «Jinrichtun3 according to claim 1, characterized in that that _n the refrigerant line (1j5) between the compressor and Umsteuerorgan (6) a Unuhitzer is installed.