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INVENTION
Patent of the Russian Federation RU2196942
GAS COMPRESSOR HEATER
The name of the inventor: Pestov VM; Anferov Yu.G .; Babushkin VA
The name of the patent holder: Open Joint-Stock Company "Scientific and Production Association" Iskra "
Address for correspondence: 614038, Perm, ul. Acad. Vedeneeva, 28, OAO NPO Iskra
Date of commencement of the patent: 2002.09.10
The invention relates to gas equipment, in particular to gas mixing stoves, used for heating premises (storehouses, livestock, industrial, greenhouses). The gas mixer air heater contains a housing with a fan and a burner inside it, at the end of which there is an air swirl on the fan side, made in the form of an annular row of blades, and a confuser is placed inside the burner housing, behind which is a disk with a diameter equal to the diameter of the confuser opening. The distance between the confuser and the disk is equal to the diameter of the disk, and in the burner casing between the confuser and the disk, holes are made with plates above them having angles of inclination to the generatrix of the cylindrical torch body in longitudinal and cross sections. Such an execution of the heater allows to increase the efficiency of the heater by increasing the length of the ejection of the heated air jet, while the burner design, in which, in addition to the main combustion chamber, a gas afterburner chamber is made, the CO and NO x content in the combustion products can be reduced.
DESCRIPTION OF THE INVENTION
The invention relates to gas equipment used for heating air, in particular to gas-mixing type air heaters, and can be used for heating livestock, storage and industrial premises.
Gas heaters of various design schemes and designs are known in which air heating is carried out by mixing hot combustion products with air forced into the heater, for example an air heater according to the patent 2056013, F 24 H 3/00, 1992; A gas heater according to the patent 2137051, F 24 H 3/00, 1997; A device comprising a burner for heating a gas, German Patent No. 254062, F 24 H 3/4, 1988; A device for directly heating any gaseous media, for example air, by mixing with combustion gases to form a homogeneous mixture, French Application No. 2584800, F 24 H 3/4, 1987; Air heater according to Japanese application 2-6430, F 24 H 3/4, 1990.
An air heating device is known, comprising a cylindrical body with a burner, a fan, a firing device and a flame sensor, Japanese application No. 63-15512, F 24 H 3/4, 1988 is a prototype.
In the known heating device, the combustion products of the gas are ejected into the annular gap between the burner body and the heater housing in which they are mixed with the air pumped by the fan, heated and discharged into the hole made on the side surface of the housing of the heating device. In order to provide air supply only to the annular gap between the burner housing and the housing of the heating device, a reflector plate is installed in front of the fan, the diameter of which is greater than the diameter of the heater, in addition, the design of the heating device before the release of the heated air-gas mixture provides a 90-degree rotation of the air flow. All these design features of the known heating device lead to an increase in the hydraulic resistance in the air path, which in turn leads to a reduction in the head and the rate of the outflow of heated air from the heating device, that is, leads to a decrease in the efficiency of heating the air in the room.
A technical object of the present invention is to increase the efficiency of the air heater while ensuring the minimum content of CO and NO x in the combustion products.
The technical result is achieved in that an air swirler is installed in the end of the burner on the fan side in an air heater of a gas mixer containing a housing with a fan and a burner inside it, and a confuser is placed inside the burner casing, behind which is mounted a disk, The diameter of which is equal to the diameter of the confuser opening, the distance between the confuser and the disk being equal to the diameter of the disc, and holes in the burner casing between the confuser and the disk are provided with plates mounted above them having angles of inclination to the generatrix of the cylindrical torch body in longitudinal and cross sections.
In addition, the air heater has a firing device, a flame sensor, an air pressure sensor, a gas device (an electromagnetic valve with gas pressure sensors at the inlet and outlet of the valve), and a control panel.
In Fig. 1 shows the general view of the air heater
FIG. 2 - longitudinal section of the air heater
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FIG. 3 - burner of the heater. FIG. 4 - cross-section of the burner
The air heater consists of a casing 1, inside of which there is a jet axial fan 2 and a direct-flow-vortex burner 3. At the end of the burner 3 there is a swirler 4 of the air flow directed to combustion, a confuser 5 and a disc 6 are installed inside the burner, and on the burner casing between the confuser 5 And the disk 6 has holes A with plates B, which are inclined at angles 
and 
To the generator of the cylindrical body of the burner.
A gas nozzle 7 is installed on the swirler 4, an electric candlestick 8 and a flame detector 9 are mounted on the burner housing, an air pressure sensor 10, a gas equipment unit 11 and a control panel 12 are located on the heater body.
The air heater works as follows. The air from the heated space 2 is taken from the heated space and fed to the heater body 1 in which the air flow is divided into two parts: a part of the air passes between the heater body 1 and the burner body 3, the other part is supplied to the inside of the burner 3. The airflow volume ratio is determined by the air volume, Necessary for complete combustion of the gas supplied to the burner. The combustion products leaving the burner 3 are mixed with the air flow passing between the heater body 1 and the burner 3, the hot air-gas stream is ejected from the air heater, and by using a direct-flow-vortex burner and an axial jet fan in the hot water heater, Is carried out at a distance of 30 to 50 m (depending on the characteristics of the fan), and new layers of air in the heated room are constantly drawn into the spiral stream of heated air, as the distance from the heater is increased, which increases the efficiency of the air heater.
The air supplied to the burner 3 passes through the swirler 4 and mixes with the gas supplied through the injector 7, the resulting turbulence provides a homogeneous mixture in the combustion zone G.
Taking into account the peculiarity of the direct-flow-vortex burner consisting in the high speed of the gas-air mixture inside the burner and the possibility of the unburned part of the gas being ejected from the burner, the gas burn-out zone 3 is formed in the burner, which is structurally constructed by installing the disc 6 behind the confuser 5. In the case of the unburned part Gas it mixes with air entering through holes A and with a swirl and is burned in zone 3, which ensures a minimum content of CO and NO x in the combustion products.
Thus, the proposed technical solution provides
- high efficiency of the air heater (due to the large length of the ejected jet of heated air and intensive mixing of air in the heated space);
- minimum content of CO and NO x in combustion products.
CLAIM
A gas mixing air heater comprising a housing with a fan and a burner located inside it, characterized in that an air swirler is provided at the end of the burner on the fan side, in the form of an annular row of blades, and a confuser is placed inside the burner housing, behind which there is a disk with a diameter equal to The diameter of the confuser opening, the distance between the confuser and the disc being equal to the diameter of the disc, and in the burner housing between the confuser and the disk, holes are made with plates above them having angles of inclination to the generatrix of the cylindrical burner body in the longitudinal and cross sections.
print version
Date of publication 25.01.2007gg
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