SU584101A1

SU584101A1 - Diffusion pump

Info

Publication number: SU584101A1
Application number: SU7402027527A
Authority: SU
Inventors: Владимир Николаевич Кеменов
Original assignee: Предприятие П/Я А-1614
Priority date: 1974-05-28
Filing date: 1974-05-28
Publication date: 1977-12-15

Description

руютс на охлаждаемых стенках корпуса I и по капилл рно-пористым опорам 7 и конусообразному элементу 9 возвращаютс в зону испарени . Откачиваемый газ сжимаетс струей пара и выбрасываетс на сторону предварительного разрежени .They are guided on the cooled walls of the housing I and are returned to the evaporation zone through the capillary-porous supports 7 and the cone-shaped element 9. The evacuated gas is compressed by the steam jet and thrown onto the pre-dilution side.

Вследствие выполнени нагревател внутри корпуса, с отделением его и рабочей жидкости от дна корпуса, достигаетс больша экономи затрачиваемой мощности. Пар в паропроводе из-за небольшой высоты последнего, наличи выступающих частей опор и эжектора хорошо перегреваетс , что, в свою очередь , увеличивает быстроту откачки и улучщает другие характеристики насоса. Насос при высоких значени х всех характеристик, наличии большого числа ступеней паропровода , имеет небольшую высоту и небольшие радиальные размеры, удобен при агрегатировании , прост в разборке и при проведении профилактических работ.Due to the implementation of the heater inside the housing, with the separation of it and the working fluid from the bottom of the housing, greater power consumption is achieved. The steam in the steam line due to the small height of the latter, the presence of protruding parts of the supports and the ejector is well overheated, which, in turn, increases the pumping rate and improves other pump characteristics. The pump with high values of all characteristics, the presence of a large number of stages of the steam line, has a small height and small radial dimensions, it is convenient for aggregation, easy to disassemble and for maintenance work.

Claims

1. A diffusion pump, comprising a housing with inlet and outlet nozzles, placed with a gap in its lower part, a boiling fluid, with a steam pipe installed along the axis of the housing, and an ejector located in the outlet

a nozzle, characterized in that, in order to increase thermodynamic efficiency, the boiler in the housing is mounted on supports made of a capillary-porous material, the upper part of which is located above the level of the working fluid.

2. A pump according to claim 1, characterized in that the outlet with an ejector nozzle is located along the axis of the steam line and is fixed in the bottom of the housing.

3. A pump according to claim 1, characterized in that a tapered element of a capillary-porous material with a sealing coating on the side surface is installed along the axis of the ejector nozzle and the outlet nozzle.

Sources of information taken into account during the examination 1. Zeitlin A. B. Steam jet vacuum pumps, M., Energia, 1965, p. 260

2. US patent No. 3362623, cl. 417-154,1666.