JPS5926209B2 - liquid fuel atomization device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a liquid fuel atomizer that forms a liquid column on the combustion surface of liquid fuel using the vibration energy of an ultrasonic vibrator, and generates fuel particles around this liquid column. The purpose is to stabilize the combustion at the start of combustion.

Examples thereof will be described below with reference to the accompanying drawings.

In the figure, a container 1 that stores liquid fuel A such as oil is
An air population 2 is located above the peripheral wall, and a fuel supply port 3 is located below.
Further, an ultrasonic vibrator 4 is provided at the bottom.

Reference numeral 5 denotes a cylindrical body inserted into the container 1. A combustion plate 6 is provided at the upper end protruding outside the container 1, and the opening at the lower end is located above the liquid level of the liquid fuel A. .

Reference numeral 7 denotes a controller for the ultrasonic transducer 4, which applies a lower input to the ultrasonic transducer 4 than during normal operation for a certain period of time after the start of operation.

8 is an auxiliary heater, 9 is a fuel temperature sensor, and a controller 10.
11 is a temperature sensor for controlling the current to the auxiliary heater 8.

In the above configuration, during steady combustion, the temperature of the liquid fuel A is kept at a constant value by the frictional heat generated by the four vibrations of the ultrasonic vibrator 4, and if this heat is insufficient, by the heat of the auxiliary heater 8.

This liquid temperature is for making the viscosity of the liquid fuel A suitable for generating a liquid column.

However, the vibration energy of the ultrasonic vibrator 4 is the liquid fuel A.
A liquid column A' is formed above the liquid level of the cylinder 5 and facing into the cylinder 5, and fine particles of fuel are generated around the liquid column A'.

The particulate fuel flows in from the air mass 2, mixes with the air flowing in the cylinder 5, reaches the combustion plate 6, and is combusted there.

By the way, in this type of conventional atomization device, it takes a certain amount of time for the ultrasonic vibrator to reach a stable operating temperature, and as the liquid temperature rises due to a heater etc., the liquid fuel A does not reach the earthwork temperature. Due to the difference, there is a density change, and therefore, the liquid column is not formed well and stably at the start of operation, which causes pulsating combustion, CO1 medium generation, etc., and unburned due to ignition failure. There were problems such as gas leaks.

However, in the present invention, the input from the controller T to the ultrasonic transducer 4 is reduced for a certain period of time after the start of operation.

In this state, the vibration energy of the ultrasonic vibrator 4 does not form a liquid column, but merely stirs the liquid fuel A.

The liquid fuel A uniformly and quickly reaches a predetermined temperature due to the frictional heat of the vibrator 4 and the auxiliary heater 8 due to the stirring action described above.

After a predetermined time, the vibrator 4 reaches the operating temperature, and when the human power is increased to a steady value, a liquid column A' is immediately formed and atomization is stably performed.

Therefore, if the atomization device of the present invention is used, the liquid fuel can be stirred by the vibration energy of the ultrasonic vibrator before ignition, and the temperature can be made uniform, resulting in very good combustion start-up, pulsating combustion, and the generation of Co1 medium. , it is possible to start combustion stably without ignition failure.

[Brief explanation of drawings]

The figure is a sectional view of a liquid fuel atomization device showing an embodiment of the present invention. 1... Container, 4... Ultrasonic vibrator, 7
...controller.

Claims (1)

[Claims] 1. A container for storing liquid fuel, an ultrasonic vibrator installed at the bottom of the container, which uses vibration energy to form a liquid column on the liquid fuel level, and generates fuel particles around the liquid column; The liquid fuel is composed of a controller for an ultrasonic vibrator, and the controller is configured to reduce the human power applied to the ultrasonic vibrator to a G level that cannot atomize the liquid fuel in the container for a certain period of time after the start of operation. Fuel atomization device.