SU542013A1

SU542013A1 - Centrifugal nozzle

Info

Publication number: SU542013A1
Application number: SU2025123A
Authority: SU
Inventors: Ананий Иванович Меленчук; Евгений Николаевич Зайченко; Александр Николаевич Моисейчик; Александр Самойлович Штейнберг; Кира Сергеевна Козловская; Иван Никитич Юровских; Александр Михайлович Кузнецов
Priority date: 1974-05-21
Filing date: 1974-05-21
Publication date: 1977-01-05

Description

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Изобретение относитс к машиностроени и предназначено дл центробежных форсунок низкого давлени , преимущественно дл подогревателей двигателей внутреннего сгорани .The invention relates to mechanical engineering and is intended for low-pressure centrifugal nozzles, preferably for preheaters of internal combustion engines.

Известны центробежные форсунки дл подогревателей двигател внутреннего сгорани , содержащие корпус и установленные в нем проставку и распылитель с центральным сопловым отверстием и конической камерой завихривани с тангенциальными подвод щими каналами 1.Centrifugal nozzles for internal combustion engine heaters are known, comprising a housing and a spacer and an atomizer mounted therein with a central nozzle opening and a conical swirl chamber with tangential feed channels 1.

Однако известные форсунки не обладают дстаточной надежностью в работе в услови х низких температур,However, the known nozzles do not have sufficiently reliable operation in conditions of low temperatures,

Целью изобретени вл етс повышение надежности в работе форсунки.The aim of the invention is to improve the reliability of the operation of the nozzle.

Дл этого тангенциальные каналы, расположенные у большего основани конуса камеры, имеют в поперечном сечении вид неравностороннего треугольника и образованы плоскост ми, одна из которых находитс плоскости основани конуса, а друга , проход ща через большую сторону треугольника, расположена по касательной к поверхности конуса , причем диаметр меньшего основани конуса выполнен равным 1,25-1,65 диаметра соплового отверсти .For this, the tangential channels located at the larger base of the cone of the chamber have a cross-sectional view of a non-equilateral triangle and are formed by planes, one of which is the plane of the base of the cone, and the other passing through the larger side of the triangle is tangential to the surface of the cone, the diameter of the smaller base of the cone is made equal to 1.25-1.65 of the diameter of the nozzle hole.

На фиг. 1 изображена форсунка, продольный разрез; на фиг. 2 - распылитель форсун на фиг. 3 - распылитель, продольный разрез .FIG. 1 shows a nozzle, a longitudinal section; in fig. 2 shows a spray nozzle in FIG. 3 - sprayer, longitudinal section.

В корпусе форсунки 1 установлен распылитель 2, который через проставку 3 соединен с винтом 4. Между корпусом 1 и распылителем 2 расположена прокладка 5.In the case of the nozzle 1 is installed sprayer 2, which through the spacer 3 is connected to the screw 4. Between the case 1 and the sprayer 2 is a gasket 5.

Claims

Near the nebulizer 2, the turbulence chamber 6 is made in the form of a truncated cone. The sprayer has tangential channels 7, having a cross-sectional view of a non-equilateral acute triangle, for example, with angles 4О, 60 and 8О °, one side of which is located in the plane of the base of the cone, and the larger side is in the plane that is tangential to the surface a cone of the turbulence chamber of the atomizer. A nozzle hole 8 is located in the center of the turbulence chamber, and the diameter of the smaller base 9 of the truncated cone was 1.25-1.65 times the diameter of the nozzle orifice. The nozzle works as follows. When fuel enters the turbulence chamber through tangential channels 7, having a cross-sectional view of a non-triangular triangle with a larger side located in a plane tangentially adjacent to the surface of the cone, providing Eskgs the minimum loss of angular momentum of the fuel. This increases the torch angle of the fuel atomized through the nozzle orifice, improves the dispersion dispersion and the stability of the flow characteristics when the viscosity of the fuel changes. As a result, the reliability of the nozzle operation increases. Claim 1. Centrifugal nozzle, mainly for an internal engine preheater, comprising a housing and a spacer and an atomizer with a central nozzle opening and a conical swirl chamber with tangential feed channels, which in order to increase reliability, are located with tangential feed channels. at the larger base of the cone of the chamber, have a cross-sectional view of a non-equilateral triangle and are formed by planes, one of which is in the plane of Vani cone and the other, passing through the large side of the triangle, on raspachozhe tangentially to the cone surface.

2. The nozzle according to claim 1, in accordance with claim 1, that the diameter of the smaller base of the cone is equal to 1.25-1.65 of the diameter of the nozzle orifice. Sources of information taken into account in the examination of the invention: 1. Yu. M, Pchelkin. Combustion chambers of gas turbine engines, from Mashinostroenie, Moscow, 1973, p. 283291.

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