RU2561745C1 - Food product storage with accumulation of cold - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: food product storage with accumulation of cold is designed in the form of an underground facility and has a chamber for placement of products, a vessel with cold accumulation liquid and a means for cooling such liquid, the means filled with a coolant medium. The liquid cooling means contains serially connected parts acting as an evaporation zone, a transportation zone and a condensation zone. The condensation zone is positioned under the ground surface. The cold accumulation vessel is positioned inside, in the central part of the refrigeration chamber air part; the condition of ice across the whole depth of the cold accumulation vessel is controlled by temperature sensors installed across the whole depth.

EFFECT: increase of the area of contact of the cold accumulation vessel and ice condition control.

2 dwg

Description

The invention relates to means for storing food products.

Known storage for food with accumulation of cold, taken as a prototype [1]. It is an underground structure with a chamber for placing products and containing a container with liquid for accumulating cold, as well as a means for cooling this liquid in the form of a gravitational heat pipe, which has a sealed housing filled with refrigerant, containing series-connected parts that are the evaporation zone, transport zone and condensation zone located above the ground surface. The food storage chamber on a part of its floor is made with a recess in which the indicated container with a liquid for accumulating cold is placed, this container is made of elastic material with a reserve by volume for expanding the specified liquid when it goes into the solid phase and is enclosed in a hard protective top a casing with the ability to fit to its inner surface. The body of the gravitational heat pipe in the evaporation zone is made of easily deformable metal and is curved along a helix covering a container with liquid for accumulating cold, together with a rigid protective casing in which this container is enclosed, along its perimeter and height, while part of the gravitational heat pipe, which is its transport zone, passes vertically through the specified chamber and the soil layer above it until it connects to the part, which is the condensation zone.

The disadvantage of this storage facility for food products with accumulation of cold is the small contact area of the container with liquid for accumulating cold, the lack of temperature control and the state of ice in the tank for accumulating cold.

The objective of the invention is the increase in the contact area of the tank for accumulating cold and monitoring the state of ice.

The technical result is achieved due to the fact that the capacity for accumulating cold is located inside in the central part of the air cooling chamber, thereby increasing the heat transfer area and reducing the cooling time of the products. The cold storage tank is made of a heat-conducting material with a volume reserve for expansion of the liquid upon its transition from the liquid phase to the solid. To monitor the condition of the ice throughout the depth of the tank at a certain distance, temperature sensors are installed.

The invention is illustrated by drawings, which show:

- in FIG. 1 is a General view of the storage for food products with the accumulation of cold,

- in FIG. 2 is a top view of a food storage depot with accumulation of cold.

The proposed storage for food products with accumulation of cold is (Fig. 1) an underground structure containing a capacity for accumulating cold 1, an air cooling chamber 2, having a wall 3 in contact with the ground 4, floor and ceiling covering with a hatch 5. Access to the hatch 5 shown in FIG. 1, the storage is carried out through an inclined vestibule 6 with a door 7 and a ladder 8, which extends to the floor of the air cooling chamber 2. Instead of an inclined vestibule 6 with a door 7, a vertical shaft can be used, which instead of door 7 has a horizontal hatch at the ground surface level. Thermosiphons 9 are installed in the tank for accumulating cold 1, containing serially connected parts, which are the evaporation zone, the transport zone and the condensation zone located above the soil surface, which cool the water 10, and the temperature is monitored by sensors 11.

The device operates as follows.

The tank for accumulating cold 1 is filled with water 10. Inside the thermosiphon pipe 9, refrigerant (freon, ammonia, carbon dioxide) is pumped, the boiling point of which varies from -15 ° C to -30 ° C depending on pressure. The thermosiphon 9 is placed in the evaporation part in a container for accumulating cold 1. At an ambient temperature below -5 ° C, it starts to function. The refrigerant in the evaporator, surrounded by water with a temperature of + 1 ÷ + 4 ° C, begins to boil intensively, taking heat from water 10 throughout the thickness of the cold storage tank 1. The vapor of the refrigerant rises and comes in contact with the internal surface frozen to the temperature of the outside air, condense, giving heat to the walls of the condenser. Drops of refrigerant on the walls of the thermosyphon 9 under the influence of gravity flow down to the evaporator, where they again evaporate. Thus, there is a continuous process of pumping heat from the entire thickness of the water 10, from the bottom bottom to the upper layers.

The cold storage tank 1 is located inside in the central part of the air cooling chamber 2 (this is shown in Fig. 2), thereby increasing the heat transfer area.

To monitor the state of ice over the entire depth of the tank for accumulating cold 1, temperature sensors 11 are installed at a certain distance.

Soil 4 in contact with the wall 3 is cooled in the cold season and plays the role of an additional cold accumulator in the air cooling chamber 2.

In the warm season, when the air temperature above the soil surface becomes higher than the ambient temperature in the evaporation zone, the refrigerant circulation stops.

Information sources

1. RF patent for the invention No. 2495339, publ. 10/10/2013.

Claims (1)

Storage for food products with accumulation of cold, made in the form of an underground structure having a chamber for placing products and containing a container with liquid for accumulating cold, as well as means for cooling this liquid, charged with refrigerant, containing series-connected parts that are an evaporation zone, a transport zone and a condensation zone located above the soil surface, characterized in that the capacity for accumulating cold is located inside in the Central part of the air olodilnoy chamber and controls the state of ice throughout the depth of the container for cold storage is carried out by temperature sensors installed through a certain distance along the entire depth.

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