FI76423C - Machine for making ice cubes - Google Patents

Description

il 1 76423

Machine for making ice cubes. - Mask for the purpose of examination.

The invention relates to an ice cube making machine with ice-forming pins cooled by the refrigerant circulation, on the surface of which water is cooled and the ice cubes thus formed are removed by melting.

There are several different types of ice cube making devices in terms of function and construction, such as making ice in a mold, either by spraying, draining, or filling the molds and then removing them by melting with either electric heaters, cold machine hot gas, or heated water.

Another way is to make ice around a cooled pin that is immersed in water or sprayed with water that, as it flows down the surface of the pin, forms ice. Defrosting takes place with the heat provided as above. The above-mentioned devices of this kind have been shown e.g. in French Patent 1505125 and British Application Publication 2035528. The French publication describes a cooling pin with a cold medium guiding partition which, however, does not extend to the bottom of the pin but terminates considerably above the bottom. This structure also causes the partition to be carefully supported. Furthermore, when it is noted that the coolant supply and outlet pipe in the device is one and the same pipe into which the cooling pin septum extends and the inlet pipe cooling medium to control the cooling pin, it is clear that the structure is complex and requires very precise fitting to achieve a sufficiently efficient fluid flow. GB-A-2035528 also describes a cooling pin structure in which a cooling medium is fed from one cooling pin to another by means of pipes. The inlet pipe terminates in the center of the cooling pin and the mouth of the outlet pipe is located at the mouth of the cooling pin. No partitioning is used in this solution 2 76423. In the presented solution, the circulation of the medium in the cooling pin is not the most efficient.

The object of the invention is to provide an ice machine with a simple and efficient structure which is easy to use, clean and maintain. The machine according to the invention is characterized in that inside the ice-forming pins there is a well-conducting partition wall extending to the bottom of the pin and increasing the evaporator heat surface, the lower corner parts of which have been removed to form flow openings.

The pins according to the invention also work effectively in an ice-immersion mode.

Compared to the prior art, the pins according to the invention, due to their partition extending to the bottom, are simple to manufacture. They consist of simple parts that are assembled by pushing the partition into the pin all the way to the bottom. No partition fitting is required and the medium circulation wires are easy to connect the pin to each chamber formed by the partition.

The accompanying figures illustrate an ice machine according to the invention.

Figure 1 shows a partial front view of the machine,

Figure 2 shows a side view of the machine,

Figure 3 shows a front and side view of an ice-forming pin. Figure 4 shows a cross-section of an ice-forming pin.

The ice-forming pin (Figures 3 and 4) is a hollow tup-pile, 10 closed at the lower end, connected at its upper end to the inlet and outlet pipes 8 of the cooling circuit. and il 764 2 3 3 against the pages.

As can be seen from Figures 1 and 2, the refrigeration machinery of the device consists of a compressor 1, a defrost water heater 2, which acts as a pre-condenser utilizing the heat generated by the refrigeration machinery. The water heater 2 provides the warm water needed to remove the ice when the solenoid valve 3 opens, controlled by the thermostat sensor 11 and the timer. The defrost water flows from the pipe 13 to the evaporator 9, through which small holes it cools and flows into the water basin 30, at the same time providing the make-up water needed to make the ice cubes.

From the water basin 30 through the suction strainer 19, the pump 20 conveys water directly to the nozzle 31 connected to the body 20 of the pump 20 and divided by flat nozzles 32 between to the water basin 30. As the water circulation continues, the ice grows to its full size, after which the ice cubes are removed during the melting step. The jet pipe 31 is guided to its correct position by a suspension 24. After defrosting, the ice cubes fall and are guided by means of a grate 33 into the ice tank 29. As the ice tank 29 fills and the ice reaches the thermostat sensors 26, the machine stops.

As the ice cubes decrease and the sensor 26 is released from the ice, the heat conduction press 27, which conducts heat to the sensor 26, starts the machine. From the heat exchanger of the defrost water heater 2, the refrigerant circulation continues through the condenser 5 cooled by the fan 4 and the filter dryer 6 along the capillary tube 14 led by the evaporator tubes 8 inside the ice-forming pins 10. The ice-forming pin (Figures 3 and 4) is a hollow sheath with a structure, 10 closed at its lower end, connected at its upper end to the inlet and outlet pipes 8 of the cooling circuit.

Claims (1)

4 76423 is a top-to-bottom partition 34, the lower corners of which are cut off to form flow openings 3 against the bottom and sides of the pin. Through all the ice-forming pins 10 provided with the partition wall 34 of the evaporator, the cooling medium returns as steam to the after-evaporator 12 and via the suction pipe 14 to the compressor 1. The sensor 11 of the evaporator thermostat determines the size of the ice pieces under a constant time clock. To facilitate the removal of ice cubes, the elliptical pin openings of the plate-shaped evaporator carrying the ice-forming pins are provided with water grooves 36. They can be placed, for example, at the round ends of the openings. The water pump is driven by a motor 21. Excess water from the water supply is discharged through the overflow openings 16. The discharge water exits from a pipe 15, which is joined by openings 18 from an ice basin 29. The ice is taken out of the machine by a hatch 28. The device also includes a splash guard 25 which opens and allows the pieces to fall into the ice basin 29 when pushed by ice cubes. Il