SU953689A1

SU953689A1 - Incandescent plug

Info

Publication number: SU953689A1
Application number: SU782620079A
Authority: SU
Inventors: Юрий Михайлович Малышев; Виталий Степанович Чубаров; Аркадий Васильевич Нифантьев
Original assignee: Предприятие П/Я В-8905
Priority date: 1978-05-24
Filing date: 1978-05-24
Publication date: 1982-08-23

Description

(S СВЕЧА НАКАЛИВАНИЯ(S CANDLE CANDLE

1one

Изобретение относитс к энергомашиностроению и может быть использовано , например, в теплоэнергетических отрасл х промышленности дл воспламенеки топливо-воздушной смеси в камерах сгорани топливных обогревателей .The invention relates to a power plant industry and can be used, for example, in the heat and power sectors of the industry for the ignition of a fuel-air mixture in the combustion chambers of fuel heaters.

Наиболее близкой к предлагаемой вл етс свеча накаливани , содержаща корпус, в центральном отверстии которого закреплен с помощью двух уплотнительных кольцевых.изол торов нагревательный элемент, причем, упом нутые кольцевые изол торы установлены в центральном отверстии с плотным примыканием к его стенкам Cl.Closest to the present invention is a glow plug, comprising a housing in the central hole of which is fixed by means of two sealing ring insulators a heating element, moreover, said ring insulators are installed in the central hole with a close abutment to its walls Cl.

Недостатком известного устройства вл етс невысока надежность вследствие наличи зазоров при контакте, плоского торца изол тора с; плоскостью корпуса, что ведет к значительному росту местных напр жений в местах контакта.A disadvantage of the known device is low reliability due to the presence of gaps during contact, the flat end face of the insulator with; body plane, which leads to a significant increase in local stresses at the points of contact.

Цель изобретени - повышение надежности .The purpose of the invention is to increase reliability.

Указанна цель достигаетс тем, что центральное отверстие корпуса, выполнено в продольной сечении в виде усеченных конусов, сопр женных меньшими основани ми с помощью кругового цилиндра, а уплотнительные кольцевые изол торы выполнены с конусными участками, повтор ющими This goal is achieved by the fact that the central opening of the housing is made in longitudinal section in the form of truncated cones, joined by smaller bases with a circular cylinder, and the sealing ring insulators are made with conical sections repeating

10 профиль соответствующих участков центрального отверсти и установлены в последнем с образованием зазора между торцами.10 the profile of the corresponding sections of the central hole and installed in the latter with the formation of a gap between the ends.

На чертеже изображена предлагае15 ма свеча накаливани .The drawing shows the proposed glow plug.

Claims

It contains body 1, in the central hole 2 of which it is zak; replen by means of Two sealing ring insulators 3 heating element Element k. The insulators 3 are fixed, in addition, by means of an auto pair consisting of a conductive rod 5. With the passage of current through the rod 5i installed inside the heating element, the latter is heated to a temperature that ignites the air-fuel mixture in the combustion chamber. The conical shape of the outer surface of the annular insulators 3 and the execution of the control hole 2 in the form of two truncated cones reduce the required axial force while maintaining the required rigidity of the structure and, thus, increase the reliability of the glow plug. Claims of an incandescent candle containing a pus in the central hole of which are fixed by means of two sealing ring insulators a heating element, and the said ring insulators are installed in a central hole with a tight abutment to its walls, characterized in that In order to increase reliability, the central opening of the housing is made in a longitudinal section in the form of two truncated cones, joined by smaller bases with a circular cylinder, and the sealing ring insulators are olneny with the tapered portion, pov-. profile of the corresponding sections of the central opening and installed in the latter with the formation of a gap between the ends. Sources of information taken into account in the examination 1. US Patent No. 2 182831, cl. 123-Y5, published. 19 + 9.