RU2514810C1 - Device for gas heating - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: device for gas heating comprises a cylindrical body equipped with a nozzle of air supply. Inside the body there is a perforated cylinder installed coaxially, in the cavity of which there is a cylindrical body coaxially installed in the chamber of gas heating. The cavity between the perforated cylinder, the cylindrical body of the gas heating chamber and the circular chamber of fuel supply with an inlet fuel nozzle, installed at the end of the perforated cylinder, forms a combustion chamber. In the cavity of the gas heating chamber body there is a coaxially perforated cylinder for supply of cold gases with an inlet nozzle of cold gases, installed coaxially. The gas heating chamber is equipped with a nozzle for discharge of hot gases.

EFFECT: provision of effective heating of various gases, including combustible ones, and air with exclusion of direct contact of heated gases with spent smoke gases and their subsequent mixing.

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Description

The invention relates to heat engineering and can be used in various industries, for example, metallurgy, mechanical engineering, the building materials industry for heating nitrogen, hydrogen, inert gases for use as protective media for heating, as well as for heating air for use in heating technologies and systems air heating of industrial and domestic premises.

A device for heating air is known, which has a housing in the cavity of which a perforated chamber is installed at the air inlet, the openings of which are in communication with a working chamber in communication with a gas supply pipe (see A. Kurbanov, Energy-saving equipment for autonomous integrated heat supply systems of industrial enterprises. - Tver: GERS, 2001, p. 47-48).

The disadvantages of this device include incomplete burnout of a fuel with a wide range of fuel supply, which leads to the appearance of harmful emissions above acceptable values.

The prototype of the proposed invention is a device for heating air (RU 2230256, published. 06/10/2004), which contains a cylindrical body with a perforated cylinder coaxially mounted to it. In the cavity of the latter, a cylindrical air chamber is installed at the inlet, over the entire surface of which holes are made, with the formation of an annular cavity between its surface and the perforated cylinder. An annular wall is installed from one of the ends of this cavity, and an annular perforated partition is installed inside it with the formation of a gas chamber between it and the end annular wall of the gas chamber in communication with the gas supply pipe. A working chamber is formed between the gas chamber and the cylindrical surfaces forming the annular cavity.

The disadvantages of this device include the impossibility of using it when heating combustible and inert gases, as well as the presence in the heated air of a portion of the exhaust products of combustion.

In the proposed invention, a technical result is achieved, which consists in providing efficient heating of various gases, including combustible, and air, with the exception of direct contact of the heated gases with the exhaust flue gases and their subsequent mixing.

The specified technical result is achieved in the proposed invention as follows.

The gas heating device comprises a cylindrical body provided with a pipe for supplying air. A perforated cylinder is coaxially installed inside the casing, in the cavity of which a cylindrical casing of the gas heating chamber is coaxially mounted.

The cavity between the perforated cylinder, the cylindrical body of the gas heating chamber and the annular fuel supply chamber with the fuel inlet installed at the end of the perforated cylinder forms a combustion chamber.

In the cavity of the housing of the gas heating chamber, a coaxially perforated cylinder for supplying cold gases with an inlet pipe of cold gases is installed.

The gas heating chamber is equipped with a hot gas outlet pipe.

The invention is illustrated in the drawing, which shows a General view of a device for heating gases.

A device for heating gases contains a cylindrical housing 4 with a pipe for supplying combustion air 3.

Inside the housing 4, a coaxially perforated cylinder 5 is installed.

In the cavity of the perforated cylinder 5, the housing 6 of the gas heating chamber with a nozzle 8 for removing hot gases is coaxially mounted

At the end of the cylinder 5 is an annular chamber of fuel supply, equipped with a pipe 2.

The annular cavity formed by the walls of the cylinder 5, the housing 6 and the fuel supply chamber is a combustion chamber.

In the cavity of the housing 6, a perforated cylinder 7 for supplying cold gases with an inlet pipe 1 is coaxially mounted with the formation of a cold gas heating chamber.

The device operates as follows.

Air is supplied by a fan (not shown) to the air chamber formed by the housing 4 and the perforated cylinder 5, from where it is directed by jets of the perforated cylinder 5 perpendicular to the surface of the housing 6 of the heating chamber.

Through the fuel supply pipe 2, fuel is supplied to the fuel chamber, supplied from it to the combustion chamber. In the combustion chamber, fuel interacts with the system of air jets and is ignited using an electric igniter (not shown).

In the initial part of the combustion chamber, a system of diffusion air flames organizes the combustion of fuel on the surface of the housing 6 of the gas heating chamber with a high heat flux density to the surface with minimal formation of nitrogen oxides under combustion conditions with a total air excess of less than unity, and afterburning of products is carried out in the tail of the combustion chamber incomplete combustion with a total coefficient of excess air is much greater than unity, which allows to almost completely burn carbon monoxide and minimize the formation of carbon oxides at low temperatures in the tail of the flame chamber.

Cold gas enters the heating chamber from the nozzle 1 through the openings of the perforated cylinder 7 in the form of a system of jets perpendicular to the heat-transferring inner surface of the housing of the heating chamber. Cold gas flowing out of the openings of the end part of the perforated cylinder 7 after colliding with the inner surface of the heating chamber housing 6 forms a system of fan jets that efficiently absorb heat transferred to the tail part of the combustion chamber to the heating chamber housing 6. Heated gas, moving from the tail to the exit from the heating chamber, interacting with the jets along the way, perceiving a powerful stream of heat coming from the initial part of the combustion zone, significantly increases its temperature.

Thus, the proposed invention achieves efficient heating of various gases, including combustible, and air, with the exception of direct contact of the heated gases with the exhaust flue gases and their subsequent mixing.

The resulting coolant is used as a protective medium in non-oxidative heating technologies, as well as in air heating systems.

Claims (1)

A gas heating device comprising a cylindrical housing provided with an air supply pipe, inside which a perforated cylinder is coaxially mounted, in the cavity of which a cylindrical gas heating chamber body is coaxially mounted, wherein a cavity is between the perforated cylinder, the cylindrical gas heating chamber body and the annular fuel supply chamber with an inlet a fuel pipe mounted at the end of the perforated cylinder forms a combustion chamber, and in the cavity of the housing of the gas heating chamber is installed A coaxially perforated cold gas supply cylinder with a cold gas inlet pipe is installed, while the gas heating chamber is equipped with a hot gas discharge pipe.

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