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INVENTION
Russian Federation Patent RU2178119
MOBILE HEAT
Name of the inventor: Altukhov RV .; Dashunin NV .; Ivanov VA .; Krivopuskov DA .; Rachuk VS .; Savin SA .; Sorokin I.N .; Sukhov AI .; AV Trubnikov .; Shevtsov AP
The name of the patentee: Federal State Unitary Enterprise Chemical Automatics Design Bureau
Address for correspondence:
Starting date of the patent: 2001.03.27
The invention relates to heat engineering, and particularly to a mobile heat generators used, for example, for heating buildings in the cold season and other facilities with hot air. Summary of the invention is that in a mobile heat source, comprising mounted on the trolley body to the exhaust pipe with a chute and channels the heated air inlet and outlet, inside which the air blower, the combustion chamber with burner unit, a heat exchanger with a central passage and fuel line, the housing the exhaust pipe mounted vertically on the carriage, the central channel formed by annular rows of vertical pipes reporting cavity combustion chamber with the exhaust pipe and the combustion chamber is limited at the top of the annular cavity formed by two concentric cylinders mounted on the burner device. To compensate for thermal elongation pipes and sealing the combustion chamber cavity concentric outer cylinder connected to the housing through the aperture. To organize sustainable fuel combustion process and the completeness of combustion burner device is a toroidal shape. The proposed heat source is eliminated accumulation of fuel-air mixture that ensures safe operation of the heat generator. Improved heat transfer achieved by using a vertical tube bundle with a cross-flushing it with air. Simplification of the heat generator design is achieved through the ability to implement existing technologies. The foregoing provides a high reliability of the proposed heat generator.
DESCRIPTION OF THE INVENTION
The invention relates to heat engineering, and particularly to a mobile heat generators used, for example, to heat the engine before starting placed in the cold season and other facilities with hot air.
Known mobile heat source, comprising a self-propelled chassis placed on power engine and heater for feeding and heating the air directed to the consumer, and a built-in heater combustion chamber with the air and fuel highways, the first of which the output is connected to a distribution manifold (aut.'s Certificate. 465 534 , F 26 MKI in 23/02, 30/03/75).
The disadvantages of the known solutions include the complexity of the design and operating low-tech mobile heat source, which consists in the fact that the need to move the self-propelled chassis.
The closest to the technical nature of the present invention is a mobile heat source, comprising mounted on the carriage body with the exhaust pipe from the slide gate and channel inlet and outlet of the heated environment, inside which the blower, combustion chamber with burner unit, a heat exchanger with a central channel for supplying the heated medium and fuel line (author's Certificate 293163, MKI 26 F in 23/02, 15/01/71 -.. a prototype).
The disadvantage of this solution is that in the heat source when re-ignition of the fuel mixture often occurs ignition of fuel vapors accumulated in the combustion chamber due to insufficient ventilation, which greatly reduces the operating reliability and safety of the heat source.
An object of the invention is to increase the reliability of mobile heat generator, simplifying its design, safety, and improve heat transfer and combustion of fuel in the combustion chamber due to the vertical arrangement of the heat generator and new design solutions that eliminate the accumulation of fuel in the combustion chamber.
The task is achieved due to the fact that the proposed mobile heat source, comprising mounted on the platform body to the exhaust pipe with a chute and channels the supply and removal of the heated medium inside which the air blower in the form of an axial fan, a combustion chamber with a burner device, a heat exchanger with a central channel for supplying heated medium and the fuel pipe according to the invention housing the exhaust pipe mounted on a carriage vertically central channel of the heat exchanger is formed by annular rows of vertically fixed equidistant pipes reporting cavity combustion chamber with the exhaust pipe and the combustion chamber in the upper part limited by the annular cavity formed by two concentric cylinders mounted on the burner device.
To compensate for temperature lengthening the heat exchanger tubes and sealing the cavity from the combustion chamber channel for discharging hot air concentric outer cylinder connected to the housing through the aperture.
To organize a sustainable process of burning fuel and high completeness of fuel combustion burner device is a toroidal shape.
The proposed mobile heat source is schematically represented in the drawing.
 | The main elements of the heat generator are: |
The housing 1 is cylindrical, the exhaust passing pipe 2. The exhaust pipe 2 is set to change the gate 3 of the combustion products flow. The nozzle body 1 made 4 for supplying cold air to the heat exchanger and the outlet pipe 5 for hot air to the user. The housing 1 is fixed to the carriage 7 for transporting the heat source. Inside the housing is mounted a combustion chamber 8 and the heat exchanger 9. In turn, the combustion chamber communicates with the outlet cavity 10 of air blower 6 and it is located above the burner unit 11. The burner device an annular cavity 12 formed by inner and outer concentric cylinders 13, 14 fixed on the tube sheet heat exchanger. The annular cavity is to arrange a uniform supply of cold air to the burner flame zone to reduce the temperature of combustion products flowing into the heat exchange tubes of the heat exchanger. The heat exchanger 9 is configured with a central channel 15 formed by vertical tubes secured at their ends in tube plates at a certain distance from each other. To allow thermal lengthening of the heat exchanger tubes between the housing 1 and the outer concentric cylinder 14, diaphragm 16 is fixed.
Principle of operation of heat generator is as follows
Included in that the air blower 6, and then the ignition device (not shown). When checking the flame at the ignition device is supplied to the fuel burner device 11. To this burner device is supplied from the air blower 6 and the air-fuel mixture is formed, participating in the combustion process. For cooling and combustion air supplied to the sides of the burner apparatus of the annular cavity 12. Combustion gases passing through the heat exchange tubes of the heat exchanger, is cooled to a predetermined temperature, giving heat to the heated air through the exhaust pipe and the two are released into the environment. To change the temperature of the combustion products entering the heat exchanger need to regulate the flow area of the outlet pipe 3. For example a chute, a chute to reduce the temperature increase flow area, in this case the increased secondary air flow through the annular cavity 12 and the combustion temperature drops. If necessary combustion temperature increase before the heat exchanger should slide gate orifice to reduce tailpipe. Turn off the heat source of the work is carried out the fuel line 17 overlap.
The heat generator proposed by the accumulation of fuel vapor is eliminated, since it is made once-through, without any stagnant zones. Furthermore, when liquid fuel its unburned portion can be poured out of the heat source, which can be carried easily in the proposed design drainage. This ensures safe operation of the heat generator. Improved heat transfer achieved by using a tube bundle, the surface of which the necessary heat transfer area, as is known, is easily accomplished, and the heat transfer coefficient from the beam sharply increases when heated Wednesday flows around it laterally. Furthermore, the use of toroidal shape burner with injection type mixing elements at low gas pressures of 0.5-1.5 kPa process provides stability of combustion and high combustion. Simplifying the design of the proposed heat-generator, as shown by engineering developments, achieved through the possibility of implementing the currently existing technologies (flaring of pipes, flanges receipt by rolling corner, and so on. N.). The foregoing and provides a high reliability of the proposed heat generator.
CLAIM
Roll heat generator comprising fixed on the carriage body, the blower, the combustion chamber with burner unit, a fuel line, a heat exchanger with a central channel, the channel for supplying cold air and the channel for discharging the hot air exhaust pipe slide valve for discharging combustion gases into the atmosphere, characterized in that the housing with the exhaust pipe mounted on the carriage vertically, the central channel formed by annular rows of vertically fixed and equidistant pipes reporting cavity combustion chamber with the exhaust pipe and the combustion chamber in the upper part is in the form of two concentric cylinders, mounted above burner device and forming an annular cavity concentric outer cylinder of which is connected to the housing through the aperture of the heat generator.
Roll according to Claim heat source. 1, characterized in that the burner device is of toroidal form.
print version
Publication date 07.12.2006gg
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