SU1550231A1 - Cooled trap - Google Patents

Abstract

The invention relates to vacuum technology. The aim of the invention is to increase efficiency by reducing refrigerant losses, as well as improving processability. The cooled trap comprises a housing 1 with inlet and outlet nozzles 2 and 3 placed in the housing 1 a refrigerant vessel 4 with a bottom 5, walls 6 and a filler neck 7 with a stopper 8, an oil trap 9, and the trap is provided with an annular partition 10 installed in the bottom part of the vessel 4 with the formation of the cavity 11, bounded by a partition 10, the bottom 5 and the walls 6, placed in the cavity 11 by the disk 12 with a central hole 13, the first tube 14 and the second tube 15, coaxially mounted with a gap 16 relative to each other and fixed respectively, in the holes of the partition 10 and the disk 13, an umbrella cap 17 installed in the vessel 5 on the upper end of the first tube 14 and enclosing the second tube 15, in the first tube 14 under the umbrella cap 17 there are holes 18 for the passage of refrigerant vapor, the upper end of the second tube 15 is placed in the plug 8, in which an annular groove 19 is formed, coaxial with the second tube 15, a transverse channel 20 and drainage holes 21, which connect the cavity of the groove 19 with the internal cavity of the second tube 15 and the atmosphere. 1 il.

Description

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The invention relates to vacuum technology and can be used to protect the pumped volume from the vapors of the working fluid of a vacuum pump.

The purpose of the invention is to increase the efficiency (by reducing the loss of the refrigerant) and the processability of the cooled trap.

The drawing shows a cooled trap, a longitudinal section.

The cooled trap comprises a housing 1 with an inlet 2 and an outlet 3 with nozzles, placed in the housing 1, a refrigerant vessel 4 with a bottom 5, walls 6 and a filler neck 7 with a stopper 8, an oil-reflecting ring 9 mounted on the inner wall of the housing; an annular partition 10 installed in the lower part of the vessel 4 with the formation of a cavity 11 bounded by a partition 10, a bottom 5 and walls 6 of the vessel 4 placed in the cavity 11 by a disk 12 with a central hole 13, the first 14 and second 15 tubes coaxially installed a gap 16 relative to each other and fixed respectively in the openings of the partition 10 and the disk 12, with an umbrella cap 17 installed in the vessel 4 on the upper end of the first tube 14 and surrounding the second tube 15, in the first tube 14 under the umbrella cap 17 there are holes 18 for passage refrigerant vapor, the upper end of the second tube 15 is placed in the plug 8, in which an annular groove 19 is made, coaxial with the second tube 15, a transverse channel 20 and drainage holes 21, communicating the groove cavity with the internal cavity of the second trumpet Bki 15 and with the atmosphere.

The cooled trap works as follows.

Liquid refrigerant is poured through the neck 7 into the vessel 4. The refrigerant vapor enters the holes 18, through the annular gap 16 enters the cavity 11, flows around the disk 12 and through the tube 15, the channel 20, the groove 19 and the drain holes 21 to the atmosphere. The air passing through the trap interacts with the bottom 5 and the walls 6 of the vessel 4, as a result of which the oil vapors of a vacuum pump (not shown), water vapors and carbon dioxide are frozen out.

The use of the annular partition 10 with the formation of the cavity 11 eliminates the direct interaction of the bottom 5 of the vessel 4 for the refrigerant with a warm stream. Placing the tubes 14 and 15 coaxially with respect to each other protects the liquid refrigerant from the partially heated vapors passing through the opening 13.

The disk 12 is designed to cool the bottom 5.

Using a plug 8 with an annular groove 19, a channel 20 and drainage holes 21 allows the neck 7 to cool, which slows down the evaporation of the refrigerant. The proposed cold trap (compared to the known ones) has increased efficiency (due to utilization of refrigerant vapor) and manufacturability (due to the simplicity of part configuration).

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Claims (1)

Invention Formula A cooled trap comprising a housing with inlet and outlet nozzles, a coolant agent vessel with a bottom, walls and a filler neck with a stopper placed in the housing, an oil trap mounted on the inner wall of the housing, characterized in that, in order to increase efficiency by reducing loss of the refrigerant, as well as increasing the illogicality, the trap is equipped with an annular partition installed in the lower part of the vessel with the formation of a cavity bounded by a partition, bottom and walls of the vessel placed in the dis lump with central hole, first and second 5 tubes, coaxially installed with a gap relative to each other and fixed respectively in the holes of the partition and the disk, with an umbrella cap installed in the vessel on the upper end 0 of the first tube and covering the second tube, in the first tube, under the umbrella hood, holes are made for the passage of refrigerant vapor, the upper end of the second tube is placed in the stopper, in which an annular groove is made, coaxial with the second 5 tube, the transverse channel and drainage holes, indicating the cavity grooves, respectively, with the internal cavity of the second tube and the atmosphere.