SU1498974A1 - Steam-jet vacuum pump - Google Patents

Abstract

The invention relates to vacuum technology and can be used in steam jet vacuum pumps. The aim of the invention is to improve the pumping performance and reduce power consumption. In case 1 there are steam lines 2 with nozzles 3, a boiler 4 with a working fluid (GF) 5, a rotating heater installed in it, partially protruding above the GF level 5. The heater is made in the form of a hollow truncated cone 6, the smaller base 7 of which is immersed in GF 5. The rotating cone 6 intensifies the heat exchange of RJ 5 in boiler 4 and creates conditions for boiling a thin film of RJ 5. Heating and boiling a small amount of RJ 5 allows to reduce power consumption, and also reduce the time for the pump to reach the mode, increase the steam density th jet. 1 il.

Description

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The invention relates to vacuum technology and can be used in steam jet vacuum pumps.

1 The purpose of the invention is to improve the pumping performance and reduce the consumption of mass.

The drawing shows a steam jet; a smart pump; longitudinal section.

The pump includes a housing 1, steam lines 2 placed in it with nozzles 3, a boiler 4 with a working fluid 5, a heater installed in it along the housing 1 axis, partially protruding above the level

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barrel liquid 5, and the heater is made in the form of a hollow truncated cone 6, m (; the lower base 7 of which is immersed liquid 5.

The pump works as follows. The heater is made in the form of a truncated cone 6, at the same time it is turned into rotation. The working fluid is entrained by the rotating cone 6, of the hole of the smaller base 7. It is poured onto the inner surface of the cone 6 and flows along it in the form of a film, where it is penetrated and (| rapid heating, boiling and evaporation of the working fluid 5 goes). - the xyuties enter the steam lines 2, the nozzles 3 expire and condense on the cooling surface of the body

Pumping the gas and it is trapped by the steam jet, compressed and ejected towards the pre-dilution stage. Condensed vapors flow back into the boiler 4. The rotating cone 6 intensifies the heat exchange of the working fluid 5 in the boiler 4, transfers part of the working fluid; through the smaller base 7 to the inner surface of the cone 6, creates conditions for boiling a thin film of liquid 5.

Such nature of heat exchange and boiling regime provide stable formation of vapors of the working fluid 5, their steady flow into the steam lines 2, which leads to an improvement in the pumping characteristics of the proposed pump, reduce the time to reach the mode.

5 Heating and boiling a small amount of liquid reduces power consumption.

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Claims (1)

Invention Formula 20 A steam jet vacuum pump comprising a casing, steam lines with nozzles placed in a new type, a boiler with a working fluid installed in it along the casing axis with the possibility of rotation, a heater that partially protrudes above the level of the working fluid, characterized in that characteristics and reduce power consumption, the heater is designed as a hollow truncated cone, the smaller base of which is immersed in 30 liquid.