SU1086322A1 - Method of separating oil from coolant in refrigerating plant oil separator - Google Patents

Abstract

The method of separating the oil from the refrigerant in the oil separator of the refrigeration unit, which has an evaporator, condenser and linear receiver, by passing a mixture of refrigerant and oil through a layer of liquid refrigerant with separate coolant and vapor removal of oil and oil, is part-marching, a shar- dy, target, to be sharted, to be sharted, to be sharted, to be sharted, to be sharted, to be sharted, to be sharted, to be shalo-dyoic). its oiling, the refrigerant from the condenser is directed to a linear receiver through an oil separator, in which its countercurrent is organized with refrigerant vapor without choking the latter. ALg (L about 00 and so Yu U.D

Description

Image - ': g' -, '!.; S relates to refrigeration, in particular to methods for separating oil from the refrigerant in refrigeration units.

A known method of separating oil from a refrigerant by passing a mixture of refrigerant and oil from the compressor through a layer of liquid refrigerant, drastically changing the magnitude and direction of flow rates of the mixture, oil and refrigerant, and separately discharging the oil and refrigerant vapor of the agent [1].

However, this method is complicated during operation and does not provide high efficiency in the entire range of refrigeration unit modes.

A known method of separating oil from ¹ refrigerant in an oil separator of a refrigeration unit having an evaporator, a condenser and a linear receiver, by passing a mixture of refrigerant and oil through a layer of liquid refrigerant with a separate discharge of ₂ refrigerant and oil [2].

The disadvantage of this method is the increased energy consumption of the refrigeration unit.

The purpose of the invention is the reduction of energy consumption of the refrigeration unit by 2 reducing its oiling.

[the goal left is achieved by the fact that according to the method of separating oil from the refrigerant es the oil separator of a refrigeration unit containing an evaporator, a condenser and a linear receiver, by passing ³ mixtures of refrigerant and oil through a layer of liquid refrigerant with separate removal of refrigerant and oil vapor, the refrigerant from the condenser is sent to a linear receiver through an oil separator, in which it organizes its counterflow with refrigerant vapor without throttling the latter.

In FIG. 1 shows an oil separator implementing the proposed method; . in FIG. 2 — section A — A in FIG. one.

The oil separator comprises a housing 1 with 4 baffle plates 2, a nozzle 3 with a diameter d of the refrigerant vapor inlet located tangentially to the housing 1, nozzles 4 and 5 of the refrigerant outlet and oil outlet, and also a device for controlling the level of refrigerant, made in the form of ⁴ with a housing 1 pipe 4 fluid drain into a linear receiver 6, equipped with an elbow 7 of length 1 = (2-3) d for fluid inlet, placed coaxially to the housing 1. Housing 1 of the oil separator is made with a diameter

D (5--7) <1, combined with the lower part of the capacitor 8, for example a horizontal shell-and-tube, and is located vertically, perpendicular to its horizontal axis. _ The pipe 4 is located at a height of H = ³ = (3-4.5) d from the axis of the nozzle 3, with a slope towards the receiver 6 of at least 3 ° to the horizontal (for reliable discharge of refrigerant).

The condenser 8 is connected to the receiver 6 by a pipe 9 to equalize the refrigerant pressure. From the receiver 6, the liquid refrigerant enters the refrigeration system through the nozzle 10, and the oil is discharged through the nozzle 11. From the oil separator, the oil is discharged using a float with a magnet 12, a magnetically controlled contact 13 ⁵ and a solenoid valve 14 located on the nozzle 5.

The oil separator operates as follows.

The flow of the mixture of vapor refrigerant and oil from compressor 0 through the nozzle 3 flows tangentially into the oil separator housing 1 filled with liquid refrigerant, which causes rotation of the liquid mass, which contributes to the separation of oil and refrigerant by centrifugal forces due to different specific weights of the separated components. The oil flows along the walls of the housing 1 to its lower part, and the refrigerant vapor sparges through its fluid layer, then through the baffle plates 2 provided with holes, they are sent to the condenser 8, ^{0 are} condensed, and the entire mass of liquid refrigerant is discharged into the linear receiver 6 through the housing I countercurrent agent vapors, which contributes to the additional separation of oil and refrigerant.

A constant level of liquid refrigerant ⁵ m is maintained by means of a nozzle 4 with a bend 7 arranged coaxially to the housing 1, which prevents the ingress of oil into the linear receiver, since the oil has a larger specific gravity and, due to the rotation of the mass of liquid, is thrown to the wall of the housing.

The proposed method combines the advantages of hydrocyclone and bubbling oil separators and their 5 ways of working, reduces the number of valves and automation devices and ensures the separation of oil from the refrigerant, which gives a significant economic effect by increasing the efficiency and reliability of the operation of refrigeration units.

Claims (1)

METHOD FOR SEPARATING OIL FROM REFRIGERANT IN A REFRIGERATOR OIL SEPARATOR, having an evaporator, condenser and linear receiver, by passing a mixture of refrigerant and oil through a layer of liquid refrigerant with separate removal of refrigerant and oil vapor, characterized in that it reduces energy consumption by using its oiling, the refrigerant from the condenser is sent to the linear receiver through the oil separator, in which its counterflow with refrigerant vapor is organized without throttling the latter.