SU737700A1 - Apparatus for combusting liquid fuel - Google Patents

Abstract

Claim 1: Oil gasification burner without additional energy for stationary and transient heating systems with fuel tank, preheater, evaporator system, nozzle and burner bowl, characterized in that the fuel tank (6) is arranged above the preheater (7), the evaporator (9) and the nozzle (1), the preheater (7) being located below the evaporator (9) and the nozzle (1), the fuel tank (6) being connected to the preheater (7) by a fuel pipe (16) and this in turn being connected to the evaporator (9) by a feed pipe (15), in which a level regulator (17) is arranged and whose gas side is connected via a gas pipe (14) to a gas collector (10), which is connected on the one hand via a nozzle pipe (11) with the interposition of a nozzle valve (5) to the nozzle (1) and on the other hand via a condensate line (12) to the liquid side of the evaporator (9) and further to its lowest point, which is as above the liquid level as possible, is also connected to the liquid side of the evaporator (9), wherein in the gas collector (10) a secondary air pipe (2) and centrally and at a distance from this a mixing pipe (3) are arranged so that an annular cross-section (4) is formed, wherein the nozzle (1) and the downstream mixing pipe (3) and secondary air pipe (2) have a common center line and further downstream the combustion chamber (26) delimited by radiation plates (18) is arranged.

Description

1

The invention relates to burner technology and can be used in stationary and mobile heating installations.

A device for burning liquid fuel is known, comprising a fuel tank, a heater, an evaporator and a fuel supply nozzle, installed at the entrance to an injection mixer 1, connected in series by pipelines.

The disadvantage of the device is the low efficiency of fuel combustion, due to the impossibility of regulating the productivity within a wide range and, in addition, low efficiency.

The purpose of the invention is to increase the efficiency of fuel combustion.

The specified objective is achieved by the fact that between the nozzle and the evaporator, a collector of evaporated fuel is additionally included, made in the form of an annular cavity located along the periphery of the mixer with the formation of a channel between them for supplying secondary air, and the lower sections of the nozzle and the collector of evaporated fuel are connected by additional condensate return pipelines to the lower part.

evaporator, and the fuel tank is located above the evaporator and nozzle.

In addition, a level regulator connected to the pipeline connecting the heater to the evaporator can be installed in the lower part of the evaporator. The level regulator can be made in the form of a glass with holes in the side walls, the upper edge of which is located at the level of the liquid fuel, and the internal diameter of the glass exceeds the distance from the upper edges of the said holes to the bottom of the glass.

The heater can be made in the form of a tray with a bowl located above it with fuel channels equipped with wicks and connected to a middle groove having recesses at the ends.

The wicks are made of asbestos.

Fig. 1 shows a schematic diagram of a device for burning liquid fuel; Fig. 2 is a general view of the device; Fig. 3 is a 20-section A-A in Fig. 2; Fig. 4 is an evaporator with a level regulator.

The device for burning liquid fuel contains a fuel tank 1 connected to a heater 2, an evaporator 3, a collector 4 of evaporated fuel and a fuel supply nozzle 5 by pipelines 6, 7, 8, 9. The fuel supply nozzle 5 is installed at the entrance to the injection mixer 10, made in the form of an annular cavity 11, located on the periphery of the mixer 10 with the formation of a channel for supplying secondary air 12. Additional pipelines 13, 14 for returning condensate serve to return condensed fuel. In the lower part of the evaporator 3, a level regulator 15 with holes 16 is installed. The heater 2 is made in the form of a tray 17 with a bowl J8 located above it with fuel channels 19 equipped with wicks 20 and connected to a middle gutter 21 having a recess 22 at the ends. An ignition hole 23 with a damper 24 serves to ignite the fuel. The combustion chamber 25 is formed by screens 26 with holes 27 in the upper one. During operation of the device, fuel is fed from the fuel tank 1 into the bowl 18. From the middle gutter 21, the fuel is distributed along the fuel channels 19, in which wicks 20 are installed, while the recesses 22 prevent fuel from splashing. If splashing still occurs, the fuel drains into the pan 17. When filled with fuel, the bowl 18 is ignited through the ignition hole 23, which after ignition of the fuel is automatically closed by the damper 24: . Due to the presence of heat release in the combustion chamber 25, the fuel located in the evaporator 3 is gasified. The fuel in the condensate return pipes 13 and 14 is also heated and partially evaporated. From the evaporator 3, the evaporated fuel is directed through the pipes 8 to the collector 4 of the evaporated fuel. Here, part of the gaseous fuel condenses and is directed through the condensate return pipeline 13 to the evaporator 3. The remaining fuel flows through the pipelines 9 to the nozzle 5. The condensate is again removed to the evaporator 3 through the condensate return pipelines 14. Due to the increase in the steam volume caused by the gasification of the fuel, part of the liquid fuel is forced out through the openings 16 of the level regulator 15 and the connecting pipelines 7, 6 into the fuel tank 1. The gas pressure in the fuel system is determined by the difference in the liquid levels in the fuel tank 1 and the level regulator. After receiving a sufficient amount of fuel gas, the fuel flowing out of the nozzle 5 ignites at the outlet of the mixer 10, in which secondary air is mixed with the stream of fuel gas. High temperatures in the combustion chamber lead

Claims (5)

to heating of screens 26, which give off part of the heat to evaporator 3, as well as connecting pipelines 7, 8 and condensate return pipelines 13 and 14, facilitating intensive gasification of fuel. Regulator 15 level eliminates failures during operation of the device in inclined positions, since it prevents the possibility of penetration into connecting pipeline 8 of liquid fuel phase. Thus, in the proposed device, efficient combustion of fuel is realized without supplying additional energy for fuel gasification with the possibility of regulation in wide ranges of productivity and rapid reaching of the operating mode. Invention formula 1. A device for burning liquid fuel, comprising a fuel tank, a heater, an evaporator and a fuel supply nozzle, connected in series by pipelines, installed at the entrance to an injection mixer, characterized in that, in order to increase the combustion efficiency, a collector of evaporated fuel is additionally included between the nozzle and the evaporator, made in the form of an annular cavity located along the periphery of the mixer with the formation of a channel between them for feeding secondary air, wherein the lower sections of the nozzle and the collector of evaporated fuel are communicated by additional condensate return pipelines with the lower part of the evaporator, and the fuel tank is located above the evaporator and the nozzle. 2. The device according to item 1, characterized in that a level regulator is installed in the lower part of the evaporator, connected to the pipeline connecting the heater to the evaporator. 3. The device according to item 2, characterized in that the level regulator is made in the form of a glass with openings in the side walls, the upper edge of which is located at the level of the liquid fuel, and the internal diameter of the glass exceeds the distance from the upper edges of the said openings to the bottom of the glass. 4. The device according to item 1, characterized in that the heater is made in a tray with a bowl located above it with fuel channels equipped with wicks and connected to a middle groove having recesses at the ends. 5. The device according to item 4, characterized in that the wicks are made of asbestos. Sources of information taken into account during the examination 1. USSR Author's Certificate JVb 536358, class F 23 D 5/04, 1972. Ч П П 10 825 /II //I (Puz.j 26 27 J / /