RU2380626C1 - Cooling chamber - Google Patents

Abstract

FIELD: heating systems.

SUBSTANCE: cooling chamber includes walls 1 with heat-insulating coating 11 and water proofing 10 and cooling units. The latter are provided with evaporators 14 and heat-dissipating elements 13. Evaporators 14 are connected as to heat to cooled volume. Heat-dissipating elements 13 are located beyond cooled volume of cooling chamber. As cooling units, there used are absorption-diffusion cooling units, evaporators 14 of which are installed in separate heat-insulating units 15. The latter are located in openings of walls 1 of cooling chamber and have heat-receiving metal panels 16 connected as to heat to evaporators 14. In cooled volume of cooling chamber there installed are cold accumulators 20.

EFFECT: enlarging operating capabilities and increasing energy efficiency of cooling chamber.

6 dwg

Description

The invention relates to refrigeration, in particular to refrigeration chambers, designed primarily for the storage of agricultural products in places of their procurement.

Known refrigerator (The use of cold for storing agricultural products. Bobkov V.A., Danilov R.L., Dracheva T.A., Noskova G.L., Olenev Yu.A. Edited by D.Yu. Ryutov. - M .: Agricultural agricultural liters, 1963, p.30-38), containing walls with heat-insulating coating and sources of cold in the form of special pockets covered with ice. Such a refrigerator is environmentally friendly, its operation requires minimal energy consumption, it is easy to operate and reliable in operation.

The disadvantages of the known cold store include the frequency of operation, binding to natural sources of cold, the inability to carry out cold storage at temperatures below cryoscopic (0 ° C), i.e. limited application possibilities.

The refrigerator compartment was adopted for the prototype (Malgina E.V., Malgin Yu.V., Suedov V.P. Refrigeration machines and units. - M.: Food Industry, 1980, p. 346-354; 360-364; 377-383 ), containing walls with a heat-insulating coating and waterproofing, and compression-type refrigerators with evaporators thermally connected to the volume to be cooled, and heat-dissipating elements (condensers) located outside the refrigerator compartment.

This freezer allows refrigerated storage in a wide range of temperatures, including at temperatures below cryoscopic; it does not have a binding to natural sources of cold.

The disadvantage of the prototype is limited operational capabilities, in particular compression refrigeration machines can not work in conditions where there are no electrical energy sources.

The objective of the invention is to expand the operational capabilities of the refrigerator.

The problem is solved in that in a refrigerator, including walls with a heat-insulating coating and waterproofing, and refrigeration units with evaporators thermally coupled to the refrigerated volume, and heat dissipation elements located outside the refrigerated compartment of the refrigerated compartment, according to the invention, refrigeration units are used absorption and diffusion refrigeration units (ADHA), the evaporators of which are installed in separate heat-insulating blocks located in the openings of n refrigerating compartment, wherein the heat-insulating blocks have metal panels associated thermally with the evaporators and in the refrigerated volume of the refrigerating chamber set holodoakkumulyatory.

The invention is illustrated by drawings.

Figure 1 shows the appearance of the refrigeration chamber.

Figure 2 - layout of the refrigeration chamber of the ground type.

Figure 3 - layout of the cooling chamber of the underground type.

Figure 4 presents the installation of ADHA in the openings of the walls in a row.

Figure 5 - option longline installation ADHA in the openings of the walls in two rows.

Figure 6 is a variant of a chess installation ADHA in the openings of the walls in two rows.

The refrigerator compartment consists of walls (building structure) 1, covered with a roof 2 (figure 1). To enter the refrigerator compartment, a door 3 is made. There are two types of execution of the refrigerator compartment — ground (figure 2) and underground (figure 3) (recessed). In the underground type, walls 1 are located underground, but not completely, but only partially recessed - i.e. have a roof 2.

In the ground version, there is a vestibule 4 with an internal door 5.

In the underground embodiment, a trench 6 is provided around the walls of the cooling chamber, designed for passage of maintenance personnel. For the descent into the trench and into the refrigerator, stairs 7 and 8 are made, respectively.

The walls 1 of the refrigerator compartment are a building supporting structure (masonry, concrete slabs, etc.) 9, waterproofing 10, thermal insulation coating 11 and stucco 12.

Modular ADHAs are installed in the openings of the walls of the refrigerator compartment, the heat-dissipating elements 13 of which (absorber, condenser, reflux condenser, generator unit) are placed outside the refrigerated chamber cooling volume, and the cold sources - evaporators 14 - are installed in separate heat-insulating blocks 15, which have metal panels 16 with vertical ribs. Panels 16 are associated with the cooled volume of the refrigerating chamber.

To protect against solar radiation, the ADHA heat dissipating elements 13 are closed with hinged false panels 17. In the ground-mounted version of the refrigerator, blinds 18 are provided that protect not only the ADHA heat dissipating elements, but also the walls of the refrigerator from solar radiation.

A special line 19 is provided for supplying coolant to the ADHA.

Cold storage units 20 are located inside the refrigerator, for example, water-salt solutions can be used.

Depending on the volume of the refrigerator compartment, the climatic zone, the required storage temperature, and ease of use, installation of ADHA in the wall openings in one row (Fig. 4) and in two rows (Figs. 5, 6) is possible.

The work of the refrigerator is as follows. The coolant (diesel fuel, kerosene, natural gas, liquefied gas, biogas, etc.) is supplied via line 19 to the ADHA burner devices (not shown in the drawing) and, when burned, performs the absorption-diffusion refrigeration cycle. Cold is generated in the ADHA evaporators 14 installed in blocks 15. Through the panels 16 with vertical fins, heat is removed from the cooled volume of the refrigerating chamber and, accordingly, the temperature of the cooling objects (products) is reduced.

Simultaneously with the cooling of the useful volume of the refrigerator, cooling and “charging” of the cold storage tanks are carried out 20. Cold storage batteries based on water-salt solutions have a phase transition temperature of -20 ... -12 ° C (depending on concentration) (Bogdanov S.N., Ivanov O. P., Kupriyanova A.V. Refrigeration technology.Properties of substances. — 3rd ed., Revised and supplemented by M .: Agropromizdat, 1985, 208 pp.). A peculiar "reserve" of cold is necessary when loading the refrigerating chamber with non-chilled products (at ambient temperature), when the cooling capacity of ADHA will not be enough to reach the set storage temperature for a specified period. The presence of cold accumulators is caused by the relatively low ADHA cooling capacity - not higher than 50 W (Zakharov N.D., Titlov A.S., Vasiliev O.B., Tyuhai D.S. New designs of energy-saving household absorption refrigeration units // Refrigeration Equipment and Technology , 1998, issue 1, No. 58, pp. 44-52).

The operation of the underground refrigerating chamber will be characterized by less heat influx from the environment and, consequently, less energy consumption during operation.

The proposed refrigeration chamber has expanded operational capabilities, since it is excluded from binding to electric energy sources and the opportunity has appeared to use alternative energy sources (gasoline, kerosene, natural gas, propane-butane, solar radiation energy, biogas, etc.). The energy efficiency of the refrigerator has been increased by eliminating losses from the energy supply chain during the production and transportation of electricity.

The refrigerator can be used in hard-to-reach areas, on pastures, in places with low-quality sources of electricity.

The refrigerating chamber makes it possible to carry out refrigerated storage in a wide range of temperatures, including at temperatures below cryoscopic.

Claims (1)

A refrigerator, including walls with a heat-insulating coating and waterproofing, and refrigeration units with evaporators thermally coupled to the refrigerated volume, and heat dissipation elements located outside the refrigerated compartment of the refrigerated compartment, characterized in that absorption refrigeration units are used as refrigeration units the evaporators of which are installed in separate heat-insulating blocks located in the openings of the walls of the refrigerating chamber, The second units have heat-absorbing metal panels that are thermally coupled to evaporators, and cold storage batteries are installed in the cooled volume of the refrigerating chamber.

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