SU1574995A1 - Gas burner - Google Patents

Abstract

The invention relates to gas combustion devices and can be used for operation in thermoplanes, as well as in other areas where a directional flow of hot air is required. The purpose of the invention is to increase the stability of the combustion and to expand the range of regulation. The gas-air mixture is supplied to the manifold 6 and through the outlet nozzles 7 enters the cavity of the cup 2, where the igniter 11 is ignited. In addition, the gas-air mixture is fed through the additional nozzles 8 into the annular channel 5, where it is ignited from the heated wall of the cup 2 or through the hole 10. The presence of a through channel formed by a hole 4 in the bottom of the glass 2, communicated with the atmosphere, and the open end of the glass, removed from the cover 2 of the housing 1, creates a powerful flow of air. The design of the burner provides both joint and separate combustion in the cavity of the cup 2 and the annular channel 5, while the ceramic perforated housing 1 serves as an emitter. 2 Il.

Description

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the nozzles 8 into the annular channel 5, where it is ignited from the heated wall of the glass Or through the opening 10. The presence of a scarlet channel formed by the opening 4 in the bottom of the glass connected to the atmosphere and the open end of the glass removed from the cover 2 of the housing 1,

; The invention relates to an ijaM gas combustion device and can be used for operation in thermocouples as well as in other areas where directional flow of heated air is required.

The aim of the invention is to improve the stability of the combustion and the expansion of the range of regulation. i FIG. 1 shows a burner, a longitudinal section; in fig. 2 is a section A-A and FIG. I.

The gas burner contains a cylindrical ceramic body I, covered at the exit with a lid 2E, a cylindrical cup 3 installed coaxially in it with a central hole 4 in the bottom, forming an annular channel 5 with the body 1, and a fuel inlet assembly made in the form of an annular manifold 6 with exhaust nozzles 7 and additional nozzles 80 A collector 6 is installed in the cavity of the cup 3, and additional nozzles 8 are placed in the annular channel 5 and connected to an autonomous line of the fuel-air mixture. The lid 2 of the housing 1 is made in the form of a perforated ring tightly adjacent to the outlet portion of the glass 3. The housing is perforated and the holes 9 of the perforation of the housing 1 are made with variable pitch and diameter increasing in the direction of the lid 2, and the cavity of the glass 3 is in communication with the atmosphere through a central holes 4; In the lower part of the glass, in the zone of placement of the additional nozzles 8, a hole 0 is made, which serves to leap the flame from the cavity of the glass into the annular channel 5; The burner is ignited by a pilot 11.

Gorelkz works as follows.

The gas-air mixture is supplied to the annular manifold 6 and, through the outlet nozzles 7, enters the cavity and creates a powerful flow of air. The design of the burner provides both joint and separate combustion in the cavity of the glass and the annular channel 5, while the ceramic perforated housing 1 serves as an emitter. 2 Il.

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where the igniter 11 ignites. Then, through an additional nozzle 8, the air / air mixture is supplied to the annular channel 5, where it is ignited from the hot wall of the glass 3, as well as through the hole 0 in the wall of the glass. The presence of a free optical path for leakage of the flame contributes to reliable ignition of the gas-air mixture both in the radiation part of the burner in the annular channel 5, and in the convective part in the cavity of the glass 3.

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The presence of a through channel formed by the hole 4 in the bottom of the glass, communicated with the atmosphere and its open end, removed from the lid 2 of the housing 1, creates a powerful flow in the convective part. When radiatively heated, i.e. in case of autonomous burning in the annular channel 5, the flow through is provided by the heated wall of the glass.

The presence of separate ignition of the burner allows for thermal regulation due to the alternate activation of the convective and radiation parts of the burner or their joint operation.

When the radiation part is operating, the ignited gas-air mixture, combustion, heats the ceramic body 1, turning it into an infrared radiation generator. At the same time, the wall of the glass 3 is heated, giving heat to the stream passing through the glass 3. When the convective part is working, the glass 3 is a combustion chamber and serves as a guide for flowing air, and its wall heated, giving heat to the perforated body 1, contributes to its transformation into a secondary radiator. When the parts of the burner work together, a powerful heat flux is generated both in the central part of the burner and in the peripheral part, and in this case it is possible to control the flow of gas.

The design of the burner eliminates flame breakage, since the heated wall of the glass is a flame stabilizer and flame breakthrough, since the combustion does not occur on the surface of the ceramic body I, but in the annular channel 5, and the perforation holes 9 can be of any size and size. In addition, the design of the burner allows refusing the forced supply of air into the cavity of the glass.

Claims (1)

Claims of the invention: A gas burner comprising a perforated cylindrical body, covered at the exit with a lid, a cylindrical mounted cylindrical glass with a central opening five at the bottom, forming an annular channel with the body, and a fuel injection unit, characterized in that, in order to improve the stability of the combustion and expand the control range, the fuel inlet unit is made in the form of an annular manifold with exhaust nozzles installed in the cavity of the cup and additional nozzles installed in the annular channel and connected to the autonomous line of the fuel-air mixture; the housing cover is made in the form of a perforated ring tightly adjacent to the outlet section of the glass; tion housing formed with a variable pitch and diameter uvelichivayuschimis towards the cover and communicates with the nozzle chamber by said attractor mosgeroi rounding the central apertures. Aa