FI20185980A1 - Institutional kitchen kettle - Google Patents

Abstract

The invention relates to a large catering pot, which consists of two legs (7) and a pot part (1) arranged inclined between them, which has an inner jacket (3) and an outer jacket (4). Between the inner and the outer jacket a gap (2) is formed, in which a cooling medium is arranged to be fed with feeding means (5) and removed with removing means (6). A container (9) is integrated in at least one leg (7), to which means for forming ice in the container are functionally connected and a pump (8) for carrying liquid in the container (9) to the space (2) and back to the container (9).

Description

The invention relates to a large-scale household pot according to the preamble of claim 1.

Pots in commercial kitchens are usually equipped with the possibility of cooling. There are basically two different ways of cooling; mains water and ice bank cooling. In mains water cooling, the water passes through the pot jacket to the drain, cooling the product in the pot. In this way, mains water is consumed a lot and the product in the pot cannot be cooled below the mains water temperature, which is about 10 ° C in Finland. If the product has the longest possible shelf life or there is another need to cool the product below the mains water temperature or the need to save on cooling operating costs, the cooling of the dams is usually carried out with an ice bank system. A conventional ice bank system consists of a tank, a refrigeration machine, and a pump and piping to transfer ice water to a pot from an ice bank, which is typically located in its own technical space near the kitchen. A refrigeration machine connected to an ice bank circulates refrigerant inside pipes or plates placed in an insulated - water-filled tank. Once the water has cooled to 0 ° C, ice begins to form on the surface of the cooling elements. When the ice thickness is sufficient, ice formation in the ice bank stops. When the need for cooling arises, the pump connected to the ice bank starts, after which the 0.5 ° C water in the tank flows through the pot jacket, cooling the product inside the pot. In terms of operating costs, an ice banking system is more advantageous than mains water cooling, especially if it is connected to the LTO system of the property, whereby the thermal energy used for ice formation can be utilized elsewhere in the property. = E The high instantaneous cooling capacity of an ice bank is based on the energy that the ice needs 2 30 - when it melts. The energy bound by ice during melting is known to be 333 kJ / kg. The cooling capacity of the ice bank largely depends on the amount of ice formed inside the ice tank before the start of cooling. High cooling capacity can be utilized when attempting to rapidly lower the temperature of the product in the pot. Achieving a corresponding cooling capacity without a tank in which ice has been pre-formed requires a considerably larger cooling machine.

The biggest obstacles to the acquisition of ice banks are the large space requirements it requires, the installation of return and return piping from the ice bank to the dams, and the resulting high rising investment cost. Especially if the need for cooling is not constant, even if necessary, this investment cost is often unreasonable and other alternatives are found.

It is an object of the present invention to provide a solution by which the above-mentioned problems can be solved. To achieve this object, the large-scale household pot according to the invention is characterized by the things set forth in the characterizing part of claim 1.

The invention will now be described in more detail with reference to the accompanying drawings, in which: Figure 1 shows a sectional view of an embodiment of a large-scale household pot according to the invention as a schematic schematic diagram, and Figure 2 shows the main components of an ice bank as a schematic schematic diagram.

Figure 1 shows an exemplary embodiment of a catering pot according to the invention. In this example, the pan is formed to be tilted by placing the pan part 1 between the support legs 7 on a support shaft 13 mounted on the support legs. In this example, the ice bank 10 © 25 - ice / water tank 9 is placed in connection with the second support leg 7. The pot-> part 1 has a cooling space - 2 formed between the inner jacket 3 and the outer jacket 4 of the pot part, which communicates with the ice bank tank 9 through pipes or hoses 14, 15 passing through the tilt shaft 13. Inside the tank 9 there are ice-forming members

N T 12, such as a refrigerant coil or a plate inside which refrigerant flows. =

O x Figure 2 shows an example implementation of an ice bank as a schematic

LO 00 na. The ice bank includes a control center 18, a compressor 16, a condenser 17 and

O N is an ice / water tank 9 with a cooling pipe 12 and an overflow pipe 19 inside.

The capacity of the ice bank 10 is smaller than in the conventional system so that the size of the pot does not increase too much. However, in order to have enough ice to cool even the larger pots, initially the pot part 1 is cooled directly by the water coming from the network. When the heat load in the pot has dropped to a level that is enough to cool the ice in the ice bank tank 290, switch to ice bank cooling. In this case, the pump 8 inside the ice bank leg circulates the ice water in the tank 9 along the pipe 14 to the boiler cooling space 2 through the inlet 5 and out of the intermediate space through the outlet 6 and along the pipe 15 back to the tank 9.

- A utility pot can also be provided with a fixed pot part, which can have a one-piece body part instead of the two support legs in the example above. In this case, the container 9 can be arranged at a desired location on the body part, either inside or outside the body part. The tank is separated from the intermediate space of the kettle section and connected to it by hoses or piping.

The invention has sought to solve problems due to which ice banking systems have not become more common. The largest of these is the investment cost. A separate space has also proved cumbersome to organize in multiple locations. It is also difficult to retrofit a normal ice bank system if the kitchen has not been reserved for space and - piping routes for the ice bank.

The ice bank pot according to the invention enables food production where low temperatures are required at a lower investment cost than a traditional ice bank system. © 25> Dams equipped with an ice bank according to the invention could also be considered to replace mains water-cooled dams and save on operating costs by reducing the use of mains water.

T E 30 - The implementation of the ice bank according to the invention could be, for example, as follows, when it is desired to cool 300 liters of product in a pot with an initial temperature of 100 ° C to a target temperature of 3 ° C. Before the start of cooling, 70 kg of ice has been formed in an ice tank with a volume of N 130 liters using a refrigeration machine inside the pot's foot. With a cooling capacity of 3kW, the refrigeration machine is able to form

70kg of ice in three hours. The refrigeration unit is mains condensed so that it takes up little space and can be enclosed tightly. Initially, the temperature of the product to be cooled in the pot is lowered to 30 ° C by supplying mains water through the jacket. This takes 40 minutes. The ice bank pump is then started and the ice water begins to circulate between the pot jacket and the ice tank, cooling the product in the pot to a temperature of 3 * C. This takes 45 minutes. With this arrangement, a co-cooling time of 85 minutes is achieved. If the amount of food to be cooled in the pan is smaller, it is advisable to switch from mains water cooling to ice bank cooling earlier in order to save mains water and reduce the cooling time. It is also possible to connect a boiler according to the invention to an already existing refrigeration network, if there is one in the property, in which case a separate refrigeration machine is not needed inside the boiler. This would lead to a situation where the cooling capacity of the ice bank would increase - and the potential LTO network of the property could be utilized for energy recovery. Reference number list

1. Pataosa

2. Intermediate mode

3. Inner sheath

4. Outer sheath

5. Intermediate feed

6. Intermediate outlet © 25 7. Foot> 8. Pump - 9. Ice / water tank i 10. Ice bank

N I 11. Commercial boiler E 30 12. Ice-making means 2 13. Boiler tilt shaft o 14. Cooling water supply pipe N 15. Cooling water return pipe

16. Compressors

17. Condenser

18. control center

19. overflow pipe 5

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Claims (3)

PATENT CLAIMS A utility pot comprising a body part and a pot part (1) arranged therein, having an inner jacket (3) and an outer jacket (4), between which an intermediate space (2) is formed, in which the cooling medium is arranged to be fed by supply means (5) and a discharge - with removal means (6), characterized in that a tank (9) is integrated in connection with the pot, inside which ice-forming means (12) are arranged, and a pump (8) arranged in connection with the tank for transferring the liquid inside the tank (9) from the tank ( 9) into the intermediate space (2) of the pot part (1) and back into the tank (9). Commercial pot according to Claim 1, characterized in that the body part is formed by two support legs (7), between which the pot part (1) is arranged to be pivotable about an inclination axis (13), and that the container (9) is integrated in the second support leg (7). ). Commercial pot according to Claim 2, characterized in that the hoses (14, 15) pass between the container (9) and the intermediate space (2) of the pot part (1) through the tilt axis (13) of the pot. [20] O OF OF I Jami o O 00 o LO 00 O OF