SU464767A1 - Absorption diffusion cooling unit - Google Patents

Description

The invention relates to refrigeration.

Known diffusion absorption refrigerating units for dual chamber preferably domestic refrigerator, comprising a thermosyphon for evaporation and pumping rich liquor condenser the refrigerant vapor after the thermosyphon serially connected low and high temperature for producing evaporators ho ,, conduit for feeding liquid refrigerant from the condenser to the low-temperature evaporator, an absorber for absorption by a weak solution of refrigerant vapor after evaporators, a strong solution collector and heat bmennik for poor and rich steam-gas mixtures.

The proposed unit differs from those known in that the lean gas-vapor pipeline after the heat exchanger is located inside the high and low temperature evaporators and when exiting the first has a hole for communication with its cavity, and the rich vapor gas mixture after the low temperature evaporator has thermal contact with the liquid refrigerant pipe and the other end is connected to the communication line of the heat exchanger with a collection of strong solution.

This allows you to increase efficiency and get cold at lower temperatures.

The drawing shows schematically the described unit.

From generator 1, refrigerant vapors enter condenser 2, where they condense. The liquid refrigerant is supplied via line 3 to the low-temperature evaporator 4 and then to the high-temperature evaporator 5. The refrigerant vapor after the evaporator 5 flows through the heat exchanger 6 of the lean and rich gas-vapor mixtures to the receiver 7 of the absorber 8. In the last refrigerant vapor is absorbed by the solution, and the poor gas-vapor mixture flows through the pipeline 9 located inside the evaporators 4 and 5, through the hole 10 into the cavity of the evaporator 5 and through the end exit of the pipe 9 into the cavity of the evaporator 4. The pipe 11 of the rich vapor-gas mixture for the deep subcooling of the liquid refrigerant entering the evaporator 4 has thermal contact with the pipeline 3. Another ontsom conduit 11 connected to a link 12 of the heat exchanger 6 to the receiver 7.

Due to the deep supercooling of the liquid refrigerant in the described implementation of the unit, it is possible to increase the efficiency of the latter and lower the temperature of the produced cold.

3 Subject of the invention

An absorption diffusion cooling unit, mainly for a two-chamber household refrigerator, containing a thermosyphon for evaporating and pumping a strong solution, a condenser of refrigerant vapor after thermosyphon, low- and high-temperature evaporators in series for producing cold, a pipeline for supplying liquid refrigerant from the condenser to the low-temperature evaporator, and a low-temperature evaporator. a weak solution of refrigerant vapor after the evaporators, a strong solution collector and a heat exchanger

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for poor and rich gas-vapor mixtures, o and t and n and with the fact that, in order to increase efficiency and cold at lower temperatures, the pipeline of poor gas-vapor mixture after the heat exchanger is placed inside the high and low temperature evaporators and at the exit of the first has the opening for communication with its cavity, and the pipeline rich in gas-vapor mixture after the low-temperature evaporator has thermal contact with the pipeline of liquid refrigerant and the other end is connected to the communication line of the heat exchanger with the collector Turnip solution.

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