Built-in spiral double-channel evaporation pipe
A technology of spiral and evaporating tubes, which is applied in the field of micro-engine combustion chambers, can solve the problems of enhanced airflow disturbance and poor atomization and evaporation effects
Inactive Publication Date: 2021-06-08
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0003] Modern micro-engine combustion chambers generally have strict requirements on the atomization and evaporation effect of fuel in the evaporation tube, but the traditional evaporation tube structure is difficult to meet the requirements of modern micro-engine combustion chambers on the atomization and evaporation effect of fuel due to factors such as poor atomization and evaporation effects. requirements, and a built-in spiral double-channel evaporator tube can effectively solve this problem. In addition, this built-in spiral double-channel evaporator tube will also make the engine start-up condition It has been improved, and its structure is simple and easy to process, so it has great application prospects
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[0022] The present invention will be further described now in conjunction with accompanying drawing:
[0023] combine figure 1 , figure 2 , image 3 , Figure 4 , The present invention provides a new design of a built-in spiral dual-channel evaporator tube that can effectively enhance heat exchange and improve fuel evaporation and atomization. in, figure 1 It is a schematic diagram of the three-dimensional structure of a built-in spiral dual-channel evaporation tube, figure 2 It is a left view of a built-in spiral double-channel evaporator tube, image 3 It is a cross-sectional view of a built-in spiral double-channel evaporator tube in the A-A direction. It can be seen that the channel arrangement inside the evaporator tube and the layout of the fuel holes downstream of the built-in spiral channel are shown. Figure 4 It is a structural schematic diagram of a built-in spiral dual-channel evaporation tube with a built-in spiral channel, Figure 5 It is a partial enlar...
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The invention provides a built-in spiral double-channel evaporation pipe. Fuel oil enters from an oil conveying hole in the head, one part of the fuel oil enters from the outer ring (a main channel) of the evaporation pipe and directly reaches the bottom of the evaporation pipe, the other part of the fuel oil enters from built-in spiral channels, by means of the structure, the retention time of fuel oil mixed gas in the evaporation pipe can be prolonged, the flow rate of fuel oil mixed gas can be effectively reduced, fuel oil spraying holes are evenly formed in the downstream of the spiral channels so that two parts of fuel oil can be mixed, and the fuel oil sprayed out of the fuel oil spraying holes evenly formed in the downstream of the spiral channels can strengthen disturbance of fuel oil airflow in the main channel, strengthen mixing of gasoline and improve the atomization effect of the fuel oil. A colander type structure is arranged at the bottom of each spiral channel, fuel oil in the spiral channels is fully utilized by the structure to generate strong disturbance on the fuel oil in the main channel again, mixing is enhanced, the retention time of the fuel oil in the evaporation pipe is prolonged, the optimal atomization evaporation effect is achieved, and the overall performance of a micro engine is improved.
Description
technical field [0001] The invention belongs to the field of micro-engine combustion chambers, and in particular relates to a built-in spiral dual-channel evaporator tube which can effectively improve the atomization and evaporation effect of fuel in the combustion chamber, thereby improving the combustion efficiency in the micro-combustion chamber. Background technique [0002] With the development of science and technology, some equipment and devices tend to be miniaturized, and aircraft is one of them. It is foreseeable that all kinds of unmanned aerial vehicles, target drones, cruise missiles and other various micro-aircrafts will inevitably play an extremely important role in modern warfare because of their simple structure and low cost. The design of the micro-combustion chamber is the key and the most important part of the micro-turbine engine. The design of the micro-combustion chamber will directly affect the performance of the micro-engine. Compared with the conven...
Claims
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IPC IPC(8): F23R3/28F23R3/32
CPCF23R3/286F23R3/32
Inventor 张群王紫欣王晓燕高耀红马晓曦
Owner NORTHWESTERN POLYTECHNICAL UNIV