SU666384A1 - Burner device - Google Patents

Description

one

The invention relates to a power system, in particular to burner devices of the furnaces of various heating installations.

A burner device is known, which contains a swirler with a injector located in a housing and ceramic inserts with channels for recycling combustion products. The housing is connected to a high-pressure fan 1. This device is labor-intensive, expensive and difficult to operate. It is also known to have a burner device containing a pneumatic atomizer of liquid fuel connected at the outlet to the gasification chamber 2. However, in this known device, due to the long flame length, a large axial extension of the gasification chamber is necessary to ensure complete combustion of the fuel in a wide range of operating modes.

The purpose of the invention is to reduce the size of the flame by reducing the length of the flame, intensifying the processes of fuel evaporation and mixture formation, in the described device this is achieved by

that the spray gun and the chamber are enclosed in a casing with a tangential air inlet open on the outlet side of the chamber, the cavity inside the casing is connected to the sprayer 6 entrance, the outlet section of the chamber is perforated, and a swirler is installed in the gap between the latter and the casing. In addition, finning is performed on the outer surface of the chamber.

The drawing shows the described device, a longitudinal section.

Claims (2)

It contains a pneumatic atomizer 1 fuel, having a central nozzle 2 and successively located diffusers 3 and 4, the last of which is connected to the gasification chamber 5. The atomizer 1 and chamber 5 are enclosed in a casing 6 with a tangential air inlet 7. The cavity inside the casing 6 communicates with the entrance to the diffuser 3, and the outlet section of the chamber 5 is filled with perforations 8 and forms with the casing b an annular gap 9 in which a swirl 10 is installed In addition, the fins 11 are made on the outer surface of the inlet section of the chamber 5 located in the air supply zone. When the burner operates, the air enters the casing 6 through the nozzle 7, washing the finned section, and is divided into two streams. One part of the air is directed to the entrance to the diffuser 3 and sprays the fuel injected by the nozzle 2, ensures its evaporation in the diffusers 3 and 4 and combustion in chamber 5, and the other part of the air enters the annular gap 9 and, flowing out through the perforation 8 and swirler 10 mixed with gasification products. The burner device in this design provides preheating of the air entering the atomizer 1, which intensifies the processes of fuel evaporation and mixture formation and reduces the length of the other diffusers 3 and 4, and also the gasification chamber 5. The presence of an annular gap with a swirler and perforations in the outlet section of the chamber improves the cooling of the latter and allows obtaining a uniform plot of the temperatures at the outlet of the device. Claims 1. Burner comprising pneumatic liquid sprayer 11 fi fuel connected at the outlet with the gasification chamber, characterized in that, in order to reduce overall dimensions by reducing the length, flame, intensifying the processes of fuel evaporation and mixing, the atomizer and the chamber are enclosed in a casing with an tangential air passage open on the outlet side of the chamber The inner tube inside the casing communicates with the entrance to the sprayer, the outlet section of the chamber is perforated, and a swirler is installed in the gap between the latter and the casing. 2. The device according to claim 1, wherein the finning is performed on the outer surface of the chamber. Sources of information taken into account in the examination 1, Modern methods of burning liquid fuel, Moscow, VINITI, 1967, p. 53-58. 2. USSR author's certificate number 13861, cl. F 23 D 11/06, 1931.