SU943496A1 - Evaporative condenser unit of refrigerating plant - Google Patents

Abstract

This invention relates to compression refrigeration units with an evaporative condenser. The purpose of the invention is to reduce the weight and size of the compression refrigeration unit. The evaporator and the evaporative condenser of the compression refrigeration unit are designed as a single evaporative-condenser unit 4, which is a case 5, in the lower part of which there are heat exchanging surfaces 18, 19, respectively, evaporation and condensation, separated by a heat insulating hermetic partition 6, and in the upper part separator 21 and fan 11. Such a constructive solution allows to combine two heat exchange units of the installation into a single unit, which contributes to a reduction in weight and size parameters s compression refrigeration system as a whole. 1 il.

Description

The invention relates to refrigeration engineering, in particular to compression refrigeration units.

The aim of the invention is to reduce the weight and dimensions of the compression refrigeration unit.

The drawing shows a diagram of the compression refrigeration unit, including evaporative-condensing unit.

The installation consists of a compressor 1, a regenerative heat exchanger 2, a regulating valve 3 and an evaporation-condensing unit 4, which is a housing 5 with a heat-insulating hermetic partition 6, equipped with air inlet pipes 7 and 8, an overflow device 9 and a make-up device 10, placed inside housing with fan 11, pallets 12 and 13, sludge pits 14 and 15, rotary valves 16 and 17, heat exchanging evaporation surface 18, heat exchanging condensation surface 19, manifold with nozzles. 20, separator 2J and control valves 22.

with

Refrigeration unit working

4 00 4i in the usual compression refrigeration cycle. The compressor 1 injects refrigerant vapor into the heat exchanging condensation surface 19 of the evaporator O5 of the condensing unit 4, where it condenses and the liquid refrigerant through the heat exchanger regenerator 2, the regulating valve 3 enters the evaporating J8 heat exchanging surface of the unit 4, where it evaporates in the vapor state through the second cavity of the heat exchanger 2 enters the compressor 1. Then the cycle repeats. When this evaporation-condensing unit 4 operates as follows. The air is taken in by the fan 11 and through the air inlet 7 at a considerable speed, regulated by the rotary valve 16, is supplied to the surface of the water in the sump 12. The air flow displaces part of the water from the sump 12, forming a movable layer of water-air foam. A column of water-air foam, consisting of a multitude of bubbles, films, streams and droplets, washes the heat-exchange evaporation surface 18, which is placed with a certain depth into the water layer, which intensifies the process of boiling the liquid refrigerant. The refrigerant receives heat from the water-air foam to wash the heat-exchange evaporation surface 18 for evaporation. As a result, water and air lower their temperature. The vaporized refrigerant vapor is drawn off by compressor 1 of the refrigeration unit through heat exchanger 2 last, compressed. And supplied to condensation heat exchanger surface 19, Air is taken in by fan 11 and fed through pipe 8 to the surface of water in pan 13, which is maintained by means of a sub-device. 10. THE AIR FLOW, adjustable by the rotary valve 17, displaces a part of the water from the sump 13 to form a water-filled foam washing the heat exchanging surface of the condensation 19. The vapor refrigerant, tupivshie last, give the heat of condensation of water ozdushnoy foam heating air and water. The air cooled on the heat exchange evaporation surface is mixed with the air heated on the condensation surface, passes through the separator 21, where dropping moisture is separated from it, and can be used for conditioning purposes. The cooled water flows from the consumer through the collector 20 with nozzles towards the flow of air exhausted on the heat-exchanging surface of evaporation J8, providing countercurrent flow of the media, increasing its more efficient cooling. Chilled water through. the overflow device 9 returns to the consumer. To prevent water from freezing during the cold season, air flow is mixed in to the incoming air, which leads out of the fan 11 and adjusts the flaps 22. Suspended particles from the air forming the air-foam are deposited in the sludge debris 14 and 15 and removed to the outside. The economic efficiency of the invention lies in the cheaper design of the refrigeration unit as a whole. Mula of the invention Compression refrigeration unit comprising a compressor installed in series, an evaporative condenser with a fan and an air-discharge pipe and an evaporator, characterized in that, in order to reduce its weight and size, the evaporative condenser and evaporator are made as a single unit, the casing of which in the lower particles is divided by a heat insulating hermetic partition into two working chambers, each of which has an individual air inlet manifold with a rotary valve, a slurry tank A water tank and a pallet with water, while one of the pallets is equipped with a level regulator and the other with an overflow device, and in the chamber with a water level regulator in the pan there is heat exchange on the condensation surface, and in the chamber with an overflow device there is a heat exchange surface of evaporation and additionally a collector with nozzles is installed, and above the latter, in the upper part of the body, a separator, a fan with an air-discharge pipe are placed in the upper part of the unit's body, and the pipe is connected with additional installed dampers to zduhopodvod nozzles conductive working chambers.

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Claims (1)

Fr.r mula of the invention A compression refrigeration unit comprising a compressor in series, an evaporative condenser with a fan and an air outlet, and an evaporator, characterized in that, in order to reduce its weight and dimensions, the evaporative condenser and evaporator are made in the form of a single unit, the casing of which in the lower part, it is divided by a heat-insulating sealed partition into two working chambers, each of which has an individual air supply pipe with a rotary valve, sludge trap k and a water tray, while one of the trays is equipped with a level controller and the other with an overflow device, and in the chamber with a water level controller in the pan there is a condensation heat exchange surface, and in the chamber with an overflow device there is an evaporation heat exchange surface and an additional collector with nozzles, and above the latter in the upper part of the casing there is a separator, a fan with an air outlet pipe is placed in the upper part of the block body and the pipe is connected with the help of additionally installed dampers to the air lead pipes of the working chambers.