JPS605217Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed description of the invention] This invention is a device with a relatively low calorific value used in oil stoves, oil heaters, etc., which atomizes liquid fuel and sends it to the vaporization chamber together with air. The present invention relates to a vaporization premix combustion device that converts air-fuel mixture into fuel at a flame port.

The liquid fuel combustion device, which is the premise of this invention, supplies fuel onto a rotating plate that rotates in an atomization container, and selects a portion of the atomized fuel emitted from the entire periphery of the rotating plate using a fuel damper. The air damper adjusts the amount of air supplied from the blower to the vaporization chamber, and the opening and closing of the fuel damper is linked to the opening and closing of the air damper, making it possible to perform minute combustion and adjust the thermal power. It has a wide range and is characterized by complete combustion at the optimum air-fuel ratio whenever the heating power is adjusted.

However, in addition to the fuel that is radiated tangentially from the rotating plate and passes through the fuel damper, there is a motion component that is diffusely reflected within the atomization container and passes through the fuel damper, and this is the communication connection between the atomization container and the vaporization chamber. and intermittently flow into the vaporization chamber.

Furthermore, the fuel adhering to the opening of the fuel damper is attracted by the air flow, spreads to the communication connection, and flows into the vaporization chamber as described above.

Therefore, there is a problem in that the air-fuel ratio is disturbed intermittently, causing abnormal flames or promoting tar crusting.

The present invention aims to improve the above-mentioned problems, and will be explained below with reference to the drawings.

Figure 1 is a vertical cross-sectional view showing the device prior to this invention;
The figure is a cross-sectional view of the atomization container and vaporization chamber, Figure 3 is a plan view of the air damper and fan case, and Figure 4 is a perspective view of the fuel damper. It has the shape of a flame port 3, and the inside is divided into a mixing chamber 5 and a vaporizing chamber 6 by a mixing partition plate 4, and 7 is a vaporizing heater embedded around the vaporizing chamber.

The outlet portion 8a of the atomization container 8 is connected to the vaporization chamber 7 via a heat insulating member 9.
The fuel damper 10, which is in communication with and inscribed in the fuel damper 10, is rotated by an adjustment lever 11, and the opening degree of the opening 12 is changed.

A rotating shaft 14 to which the rotating plate 13 is directly connected passes through the bottom of the atomizing container 8 and forms a gap 15.

A fan 16, a motor 17, a sub-tank 18, and an oil pump 19 are installed below the atomization container 8, and a rotating plate 13 and a fan 16 are connected to each other.
Both the oil pump 19 and the oil pump 19 are directly connected to the rotating shaft 14 and driven by the motor 17.

The sub-tank 17 is connected to the oil leveler 2.
0, a constant oil level is always maintained and communicated with the suction side of the oil pump 19.

An oil supply pipe 21 connected to the discharge side of the oil pump passes through the atomization container 8 and opens above the rotary plate 13, and 22 is a return pipe that communicates the atomization container 8 and the sub-tank 17.

Reference numeral 23 denotes an air chamber formed in the lower part of the atomization container 8, and an air damper 24 inserted into the air damper 24 elastically contacts the fan case 26 with a spring 25 to adjust the amount of air discharged, and its rotation is controlled by an interlocking piece. 27, it is interlocked with the adjustment lever 11.

28 is an air supply pipe that communicates the air chamber 23 and the air supply port 29.

The function of this device is to first energize the vaporizing heater 7, and when the burner body 1 reaches a predetermined temperature, drive the motor 17, and the rotary plate 13, fan 16, and oil pump 19 will rotate.

The fuel discharged from the oil pump flows down from the open end of the oil supply pipe 21' onto the rotary plate 13 in a continuous constant quantity, and
Atomized fuel is radiated tangentially from the entire periphery of the fuel.

Therefore, if the opening degree of the fuel damper 10 is opened appropriately using the adjustment lever 11, the atomized fuel that passes through the opening 12 will enter the vaporization chamber 6, and the remaining fuel will be transferred to the fuel damper 10 and the atomization container. It collided with the inner wall of 8 and became an oil film,
It further flows down and passes through the return pipe 22 to the sub tank 1.
Reflux to 8.

In addition, the air discharged from the fan 16 is transferred to an air damper 24.
The air enters the air chamber 23 according to the opening degree of the air, passes through the air supply pipe 28, and flows into the vaporization chamber 6 from the air supply pipe 29.

The fuel heated and gasified in the vaporization chamber 6 passes through the mixing partition plate 4 and the mixing chamber 5 together with air, where it is thoroughly mixed and ejected from the flame port 3, so that when it is ignited, combustion begins immediately. .

Next, by operating the adjustment lever 11 and changing the opening degree of the opening 12, the amount of fuel and air sent to the vaporization chamber 6 will change at the same time, making it easy to adjust the firepower and adjust the air-fuel ratio from high heat to low heat. can be maintained optimally to achieve complete combustion.

In addition, as the fuel sent to the vaporization chamber 6 selectively utilizes a portion of the amount discharged from the oil pump 19, small combustion can be stably maintained, and the heating power adjustment range is wide.

However, as mentioned above, fuel that is not to be controlled adheres to or spreads to the communication connection between the atomization container and the vaporization chamber, which causes problems such as abnormal combustion and tar formation.

Next, one embodiment of the present invention will be explained with reference to the drawings.
The figure is a longitudinal cross-sectional view of the atomizing container and the heat insulating member, and FIG. 6 is a cross-sectional view thereof. A communicating oil hole 8'b is bored.

In addition, the heat insulating member 9' has horizontal grooves 9'a on the surface in contact with the atomizing container.
The bottom of the oil hole 8'b is made to communicate with the oil passage hole 8'b.

The effect of this embodiment is that during combustion, uncontrolled fuel that expands and flows out of the outlet 8a gathers in the horizontal groove 8'a and flows down through the oil passage hole 8'b to the atomizing container 8. Feedback to the bottom of ′.

In addition, the fuel scattered around the connection part between the atomization container 8' and the heat insulating member 9' collects in the horizontal groove 9'a and flows down to the oil passage hole 8'b.
through which it is fed back to the bottom of the atomization vessel 8'.

Therefore, since these fuels flow back to the sub-tank 18 through the return pipe 22, the fuel that is not subject to control flows into the vaporization chamber 6.
This prevents disturbances in the air-fuel ratio and abnormal flames, and prevents fuel from accumulating in the communication connection and generating tar.

As described above, according to the present invention, uncontrolled fuel that has passed through the opening of the fuel damper, expanded or scattered, and adhered to the communication connection part is removed by the horizontal groove formed at the outlet part or by the heat insulating member. The structure is configured so that the fuel collects in the horizontal groove and returns to the sub-tank, which prevents the fuel from flowing into the vaporization chamber and causing disturbances in the air-fuel ratio and abnormal combustion, and also prevents fuel from accumulating in the communication connection. Can prevent tar generation.

[Brief explanation of the drawings] Fig. 1 is a vertical cross-sectional view showing the previous device of the present invention;
The figure is a cross-sectional view of the atomization container and vaporization chamber, Figure 3 is a plan view of the air damper and fan case, Figure 4 is a perspective view of the fuel damper, and Figures 5 and 6 are of the present invention. FIG. 2 is a vertical cross-sectional view of an atomization container and a heat insulating member showing one embodiment. 1...burner body, 6... vaporization chamber, 8,
8′...Atomization container, 8a...Outlet part,
8'a...Horizontal groove, 8'b...Oil hole,
9, 9'...Insulation member, 9'a...Horizontal groove, 10...Fuel damper, 11...
Adjustment lever, 12...Opening, 13...
・Rotating plate, 16...Fan, 22...
Return pipe, 24...Air damper.

Claims (3)

[Scope of utility model registration request] (1) Flowing liquid fuel into a rotating body installed in an atomization container,
A part of the atomized fuel radiated from the entire periphery of the rotating body is selectively sent to the vaporization chamber by a fuel damper, the amount of air supplied from the blower to the vaporization chamber is adjusted by the air damper, and then returned to the bottom of the atomization container. A liquid fuel combustion device characterized in that a lateral groove is provided at the communication connection part between the atomization container and the vaporization chamber, and the lateral groove is communicated with the bottom of the atomization container through an oil passage hole. (2) The liquid fuel combustion device according to claim 1, which is a registered utility model, characterized in that a horizontal groove is provided on the inner wall of the outlet portion where the atomization container is communicated with the vaporization chamber. (3) Utility model registration claim No. 1, characterized in that a heat insulating member is connected to the communication connection portion of the N-containing container with the vaporization chamber, and a horizontal groove is formed in the portion where the heat insulating member contacts the atomizing container. The liquid fuel combustion device according to item 1 or 2.