SU1688079A1 - Oil separator - Google Patents

Description

one

(21) 4604854/06

(22) 11/11/88

(46) 10/30/91. B yul 40

(75) A.A. Kravets

(53) 621.588 (088.8)

(56) Gavrilov B.C., Yakunichev Yu.M. Operation of ship refrigeration units of air conditioning systems. M .: Transportation,

4970, p. 104, 105, fig. 63. (54) OIL SEPARATOR

(57) The invention relates to refrigeration technology. used in cooling systems to separate the lubricating oil from the refrigerant. The purpose of the invention is to increase the degree of purification of the refrigerant from the oil. The oil separator is separated by a jet device installed in it into high and low pressure cavities, which communicate through the openings in the walls of the confuser and diffuser, ensuring an increase in the degree of oil purification from the refrigerant and recirculation of refrigerant vapor. 1 il.

The invention relates to refrigeration and can be used in cooling systems for separating lubricating oil from a refrigerant.

The purpose of the invention is to increase the degree of purification of the refrigerant from the oil.

The drawing shows an oil separator, a general view.

The oil separator comprises a housing 1, inside which the jet device 2 is located, a heat exchanger 3. The jet device 2 includes an active nozzle 5, a confuser 6 with apertures 7, a throat 8, a diffuser 9 with apertures 10, connected with a fitting 11 removal of purified freon vapors, separator 12. float 13 connected by means of a lever 14 to a needle valve 15 and a choke. oil drainage. The oil separator is divided into two cavities: A - low pressure cavity. B — high pressure cavity. The cavity And is equipped with a pressure gauge 17.

The oil separator works as follows.

Superheated refrigerant vapor containing oil enters the oil separator through the supply nozzle 4 and, after passing through the active nozzle 5, increases its speed, lowering the pressure of both the flow itself and the low pressure cavity A, in which the pressure is set lower than in the high cavity B pressure, at 1.0-1.5 kgf / cm2 (0.1-0.15 MPa). At the moment when the freon vapor leaves the active nozzle 5, besides the change in the rate of pressure drop, the phenomenon of expansion of the steam jet is observed, which also contributes to the additional release of oil. Selection of oil droplets that come into contact with the surface of the confuser 6, flow down its surface into the lower part of the housing 1, and not entering oil droplets fall under the weight of their weight onto the heat exchanger 3, which has a temperature of superheated steam, are enlarged and flow down its sloping

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ABOUT

surfaces in the lower part of housing 1 (oil pan). A jet of steam coming out of the active nozzle 5 and partially cleaned of oil in the cavity A. flows through the neck 8 into the diffuser 9, where the speed decreases, which is also accompanied by the release of oil. Droplets of oil trapped on the surface of diffuser 9 flow down and through openings 10 together with high-pressure vapors from cavity B fall into separator 12. In separator 12 an intensive process of oil separation takes place, which is provided by pressure differential between cavities A and B. Separated oil drain the oil pan. The cleaned freon vapor flows through the openings 7 of the confuser b into the low pressure cavity A, where the speed is increased, the direction is changed, the pressure is reduced, which is accompanied by additional release of residual oil, after which they are mixed with the main flow of steam leaving the active nozzle 5, and enter the neck 8. The cycle repeats. The oil collected in the lower part of housing 1 is under reduced pressure conditions and has a temperature equal to the temperature of superheated steam, which excludes the possibility of freon vapors accumulating in it and their condensation. Oil is withdrawn through the needle valve 15 and choke.

16 oil drainage. The operation of the valve 15 controls the float 13 by means of the lever 14. The clogging of the oil separator during operation is monitored by a pressure gauge 17. The decrease in pressure in cavity A indicates that the oil separator is soiled.

The use of the oil separator of the proposed design allows reducing the amount of oil circulating in the system, eliminates the possibility of liquid freon entering the compressor crankcase, boiling oil, disrupting the oil pump, and also provides recirculation of chladone vapor.

Claims (1)

Claims An oil separator comprising a housing, a heat exchanger, a steam inlet and a choke fitting, a separator and an oil removal pipeline, characterized in that, in order to increase the degree of purification of the refrigerant from the oil, it also contains an inkjet unit with a diffuser and a diffuser to form two cavities connected by holes made in the walls of the diffuser and confuser. moreover, the active nozzle of the apparatus is connected to the vapor inlet fitting, and the diffuser - to the vapor outlet fitting. // Yu 13 Butter Mr. Cleaned at PA / C. eight Madonova mistress